Any 5100b technician page DMT/SNR data experts? in AT&T Midwest

Any 5100b technician page DMT/SNR data experts? in AT&T Midwest http://www.dslreports.com/forum/r13641311 en Mon, 06 Oct 2008 13:18:07 EDT Mon, 06 Oct 2008 13:18:07 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13858006 justbits : Here's a one line summary:
SBC does not have the ability or expertise necessary to troubleshoot RF interference problems.

You're SOL if you have an RF interference problem on your DSL or telephone line!

Here's a summary of the epic:

SBC tried swapping telco lines three times. Each time the F1/F2 pair was swapped, they managed to find an increasingly worse line! Isn't that great! I went from a 5.4mbps max attainable line to 3.5mbps max attainable to the current 3.0 max attainable line. All three lines exhibited the same noise characteristics. Peridoically, during weekday mornings, the line suffers from noise that causes anywhere from a 3.0dB loss of SNRM (11.5 to 8.5) to a 7.5dB loss of SNRM (10.5 to 3.0.) For 40 days, when the problem first started occurring, this same recurring source of noise was strong enough to cause my DSL modem to lose sync every time the noise occurred.

I personally have gone many different routes attempting to troubleshoot the DSL problem. I have used 4 different modems now (two SpeedStream 5100b, SpeedStream 5660, SpeedStream 5360.) I have tried multiple CAT 5 cables. I have eliminated all inside wiring down to a CAT 5 cable running in a window to 1 telephone and 1 DSL modem for weeks now. I have a SBC provided Home Run (CAT 5) that connects directly to 1 telephone and 1 DSL modem. No other telephone wires are in use. No other telephones are connected.

I have tried telephone surge protectors. I have tried multiple DSL microfilters. Nothing changes the noise problem.

Sometimes, the noise problem manifests in thousands of CRC errors in a short amount of time. The noise occurs at different times on weekends and holidays, but is very consistently repeated during the week: 40-45 minutes where DMT bit bins are reallocated and SNRM drops significantly across the download portion of the lower frequency spectrum.

From SBC Direct, the last bunch of responses have all been related to getting me to attempt to find the source of RF interferece. Suggestions have ranged from using an radio frequency spectrum analyzer, an AM radio, to CB radios to attempting to coorrelate TV interference with the DSL problem... to even talking with my nearest neighbors in an attempt to find out if any of them are seeing any telephone, TV, DSL, Sattelite TV, Cable or radio interference at the same times of day that I am. All of these suggestions require an absurd amount of my time and money to troubleshoot and attempt to isolate... especially when the problem occurs during times of day that I am normally at work, not at home!

The whole Cable TV suggestion came in because I recently found a cable modem filter laying in my backyard. A "ARCOM WHP-5/13" coaxial signal filter was laying in the bushes behind my house. It's a "return path filter".
»www.arcomlabs.com/pdf/window.pdf

The telephone issue came into play because my directly West neighbor has been complaining to SBC for months about static, noise and crosstalk on her telephone line, but she's afraid to have them come out because they keep threatening her with "fees". She's not so happy with that idea because the problem is intermittent and she just knows that they'll come out and look at the line when the problem is not occuring. (But I haven't gotten data from her to coorelate her problems with mine yet.)

My latest troubleshooting attempts on my own behalf are in attempting to use a Formac Studio DV NTSC TV capture device to automate the collection of Channel 2 & Channel 5 TV interference that I am experiencing. At different times and durations during the day, Channel 2 and Channel 5 experience the same kind of interference: a poor TV signal with lots of interference. At other times of the day, I get dang near perfect Channel 2 and Channel 5 reception. It's frustrating. I even have two antennas available that I am sampling from: my outdoor chimney mounted antenna and an indoor RadioShack Digital HDTV amplified antenna. It's very hard for me to try to compare the data I'm capturing from the different antennas and come up with conclusions that may or may not be related to the DSL noise problem.

The Channel 2 & Channel 5 interference has become significantly worse ever since I changed the grounding on my outdoor chimney antenna. In the next few days, my father and I are going to attempt to see if his CB radio is able to cause interference on my TV. (I doubt it.) We're also going to disconnect the new grounding wire that we added to see if that changes the interference level. We're also going to reposition the outside antenna to see if that helps eliminate the Channel 2 & Channel 5 interference.

I have eliminated all electronic devices from my house as being the source of interference. I did this one day by turinging off absolutely every appliance and device in the house (except for a computer, and the DSL problem still occurred. I haven't tried this for the Channel 2/5 interference I'm seeing yet.

The funny thing is that periodically, during the day, Channel 2/5 will go from being very fuzzy to very clear, to fuzzy to clear, back to fuzzy for a long time in a 35 second sample that I just took. (118MB of raw video) Sometimes, a ghost appears... sometimes it's just a lot of static.

To do some DSL regression testing, I returned the 5100b that I borrowed from my brother and even set up his computer to start logging 5 minute snapshots during the day. He is connected to a different CO and is over 5 miles East-Northeast of my location. He experiences no sporradic RF interference on his DSL line. I obtained a new 5100b from SBC. This new modem captures the noise problem exactly the same way as the other 5100b modem I was borrowing.

So, in short, I'm attempting to correlate the Channel 2/5 interference with the DSL interference, but I'm pretty sure that's not going to prove anything at all. Coordinating with my neighbors to find out about their interference problems may be the only course of action I have in getting the FCC to come out and investigate the problem. :( Has anyone dealt with the FCC regarding interference before?

--Steve]]> http://www.dslreports.com/forum/remark,13858006 Sun, 10 Jul 2005 16:50:06 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13844617 lev : Can you summarize, in two paragraphs or so, where we are now? This thing reads like an epic. ;)]]> http://www.dslreports.com/forum/remark,13844617 Fri, 08 Jul 2005 16:34:44 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13843556 justbits : My dad spotted the neighbor's antenna at Menards. $70

Phillips Magnavox
MANT901
51 elements
VHF 200 miles
UHF 80 miles
FM 150 miles
Digital & Satellite compatible

I've got a NTSC video capture device. I've got some samples of how great the signal looks at 7:49 am this morning, compared to 12:52am this afternoon. The differences are amazing.

10.5 SNRM on 5660 modem:
[att=1]

8.5 SNRM on 5660 modem:
[att=2]

--Steve

200507080749···snap.zip 333,905 bytes
(200507080749chimneysnap.mov)

200507081244snap.zip 329,365 bytes
(200507081244snap.mov)

]]> http://www.dslreports.com/forum/remark,13843556 Fri, 08 Jul 2005 14:41:28 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13803772 justbits : I just found out that the reason why I'm down to 3.0 max attainable is because they switched my F1/F2 pairs on Thursday, in an attempt to solve the noise problem.

That's three pairs of wire that exhibit the same noise problem. Because the noise isn't causing a loss of sync anymore, I'm trying to get back the 5.4mpbs max attainable pair.

--justbits]]> http://www.dslreports.com/forum/remark,13803772 Sun, 03 Jul 2005 11:01:55 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13800835 justbits : Riss: Thanks for digging up the information on the splitter!

I just finished running a brand new grounding wire to my TV antenna.
Menards copper grounding spire
Radio Shack 40 ft Aluminum Grounding Wire
I sanded off the wire terminals that connect to the antenna to the RG6 cable.
I also added a 25 foot run of cable to completely remove how taught the antenna cable used to be. I also used rubber outdoor tape to wrap the junction of the antenna to 25 foot cable run.

Today, I ran a new grounding wire to my TV antenna.
Menards 5 foot copper ground steak
Radio Shack 40 ft Aluminum Grounding Wire
I sanded off the wire terminals that connect to the antenna to the RG6 cable. I also added a 25 foot run of cable to remove how taught the antenna cable used to be.

It's amazing. I've always had static on Channel 2 & Channel 5. Even before today and at 12noon and 3pm. But, I'm not an avid TV watcher of those channels at all times of the day.
The change was made between 3pm and 4pm.
At 4:00 til 4:45, I had periodic spurts of extreme interference on Channels 2 OTA and Channel 5 OTA. (Over the air) It would be very noisy for a while, disappear for a few minutes or seconds and then reappear.
After 5:00pm or so, Channel 2 OTA and Channel 5 OTA show up with absolutely no interference!
At 8pm (now), the interference is back. (hrmm)
I'm going to start watching 2 & 5 to see if the high periods of interference coorlate with my DSL noise interference.

I just recalled that a few months ago (not sure when) my kitty-corner backyard neighbor installed a brand new roof top antenna. I don't believe he has his antenna grounded. It's also one I've never seen before. It's very very large. Even bigger than the biggest that Radio Shack sells.

Here's what my neighbor's antenna looks like.
[att=1]
[att=2]
Has anyone seen an antenna like this before?

See that telephone cable, where it runs down the pole into the ground. That's where my telephone wire goes about 300 feet underground to a cross connect box on a side street (that's a F2 pair). From the cross connect box, it goes directly to the CO (that's a F1 pair.) In the air from my house to the pole, I estimate that's between 130 and 150 feet. I'm pretty darn close to my neighborhood cross connect box.

I can see my neighbor's RG6 cable, but no grounding wire from this angle.
I'm probably going to stop by the neighbor and ask what model/brand it is. Then I'll ask if he's got it grounded and the RG6 cable surge protected. (It's best to have both, right? I do.)

--justbits

[edit: added note about f1 & f2 pairs]

]]> http://www.dslreports.com/forum/remark,13800835 Sat, 02 Jul 2005 20:59:54 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13793101 Riss_Centaur : That splitter is a corning/siecor.
»www.corningcablesystems.com/web/···5-EN.pdf

Fairly standard in-NID pots splitter-filter.
-Riss
--
I have a plan so cunning you can pin a tail on it and call it a weasel!]]> http://www.dslreports.com/forum/remark,13793101 Fri, 01 Jul 2005 19:12:43 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13793001 justbits : Lucky me. A bunch of managers and techs were on site yesterday for a vendor meet. (SBC Ameritech-POTS + SBC ASI-DSL). Of course, they blamed the problems on my wiring AGAIN. I had a directly connected home run CAT 5 cable into the DSL modem and a regular microfilter in the NID that only provide POTS on a separate CAT 5 cable. They "replaced" those. They gave me an in-NID microfilter and a home run. The home run is a single, white outdoor CAT 5 cable into a simple plastic box marked "DSL" and "Phone". One pair of wires is DSL. One pair of wires is POTS. The in-house jack on the end of the home run has two CAT5 RJ45 8-pin connectors on it (it's not your the RJ11 6-pin jack that you'd normally expect.)

The in-NID microfilter seems to be signifcantly worse than the in-house ones that they provide! Isn't that great?
I used to get 3.2mbps max attainable. Now I'm down to 3.0 max attainable.

Best part is *drum roll please* the noisy signal still occured this morning.

I'm trying to see if I can get SBC to replace my F1 & F2 pairs with the previous ones that I had so I can get back to doing 3008/512. (The 5.4mbps+ capable wires.)

Here's a picture of the in-NID filter that I got. I'm probably going to see if I can figure out how to bypass it and run the pure POTS+DSL signal on one the DSL wire pair into my own in-door filter or even just run the customer side DSL+POTS wires directly into the modem.

[att=1]
[att=2]

Can anyone find who makes this device and what the internal wiring of it is? Is it an in-NID microfilter? It seems like it's gotta be.
SPS-SA1-SR1
104510-1A
E112187/4184
Communication Circuit Accessory

--Steve

]]> http://www.dslreports.com/forum/remark,13793001 Fri, 01 Jul 2005 19:00:24 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13791874 anon : We're on the north side of Chicago - Lawrence and Ashland - but not as far west as you are. Our exchange is 773-275, so we're not in the same central office.

Apparently our internet connection has been worse than I previously thought - I'm on a laptop in the living room so I'm rarely looking at the modem, and I get much of my fill of the internet at work. According to my boyfriend, who is on the internet at home much more than I am, the connection was going out so often recently that we could barely keep the connection going for more than 1 hour.

I say "was" because today I woke up to find our internet not working and our voice line completely dead - no dial tone. I went out to the NID and couldn't get a dial tone there, at the one that had our apartment number on it. I called SBC and they must have detected trouble on the line, because they sent out a tech. (Although it turns out the jack at the NID with our apartment # and no dial tone wasn't actually the one for our apartment - isn't that helpful?)

After some testing on the jacks in the apartment, the tech found that a busted jack in our den that we never used had a broken connection, which somehow was screwing things up for the working jacks in the other rooms. Once he fixed that, our voice came back and our DSL has been working for an hour now with no problems. I'm optimistic, although I think my boyfriend has been so frustrated with all this lately that he still thinks our connection will drop.

Now we just have to wait to see if 1) the DSL keeps working and 2) we get charged for that tech visit despite subscribing to line-backer.

Good luck to you, justbits. I too admire your patience.]]> http://www.dslreports.com/forum/remark,13791874 Fri, 01 Jul 2005 16:12:55 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13789168 justbits : I wrote some bash shell scripts.

I gather the technician data from the 5100b.
I parse out the SNRM & DMT data.
I put them into separate files.
I feed the data into gnuplot.

I gather and plot the data periodically (at least every 5 minutes) using a cron task.

I'm doing this on MacOS X, but I suppose it would be trivial to port to Linux or Cygwin.

--justbits]]> http://www.dslreports.com/forum/remark,13789168 Fri, 01 Jul 2005 10:32:42 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13786997 klevin : how do you get those nice graphs (spectrum analysis?)]]> http://www.dslreports.com/forum/remark,13786997 Fri, 01 Jul 2005 00:28:51 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13773482 justbits : I'm being patient because I'd rather have the problem completely fixed correctly, rather than quick fixed poorly, like they did when I was switch to a significantly poorer quality pair of wires on June 7th. (The change was from a pair capable of 5.4mb/1080 max attainable, to 3.2/600 max attainable.)

After reviewing yesterdays data and the day before, I think I might be seeing a larger trend across the entire day.
The lower download frequencies have significant SNRM degredation from 7am til just before 5pm. There's also typically a spurt of 100-300 CRC errors earlier in the morning too. Can't do it today or tonight, but sometime soon, I'm going to be reviewing the entire day's data for the last few weeks to see if I see the general trend during "business hours". I'd laugh if the hours match those of a local bank.

The "bit migration" problem occurs once or twice each morning. If it lasts for 45 minutes, it will usually only occur once. If it lasts for 35-40 minutes, it will usually occur twice. I need to reanalyze my data, but that's what I think I'm seeing.

I like your 3x5 crazy idea cards. Actually, a co-worker of mine who was having DSL problems proposed that some of the ASI telephone people have an 8-ball or a dart board that is weighted heavily on "inside wiring", "squirrels chewing on the wires", "high performance errors", and "bad modem". I would say "inside wiring" was the one that they hit me with the most.

--justbits]]> http://www.dslreports.com/forum/remark,13773482 Wed, 29 Jun 2005 13:02:00 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13773364 Old_Grouch : justbits

Never, ever in my life has anyone accused me of having patience like yours. I'm impressed.

No technician qualities here - - but something sticks in my mind from the reading. On page one, Riss noted that the charts seem to have a distinct sine wave pattern to them and there was discussion that that pattern could be caused by a number of things - including - T1's. And, your line runs in a bundle/group/whatever with about 9 T1's.

If you keep 3X5 cards with crazy ideas, make one out for me:
- can T1's cause a sine wave noise pattern like you have captured?
- how many of the 9 T1's that you are partnered with run to businesses that are likely retail with 24 hour/day operations and point of sale terminals that upload sales/download prices/upload inventory data?

I keep looking at the possibility and the times and can almost see a 7X24 business that has a home/regional office that queries for sales each morning while providing ordering info; and does inventory/pricing each afternoon five days a week with some (limited) spill-over to the weekend. If you've got one of those on the other end of one of the 9 T1's and they have recently added or swapped a point of sale terminal.....

I've never been any good at guessing the date a baby will be born but for other things - -

hope my post isn't too distracting. GOOD LUCK
--
Keep your eyes open for my pills...I MUST have my meds.]]> http://www.dslreports.com/forum/remark,13773364 Wed, 29 Jun 2005 12:44:09 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13772659 justbits : The SpeedStream 5360 provides absolutely no data to the customer. If it does, it's very undocumented.

A 5660 or a 5100b would be better. If you recently upgraded your service, you could call back and ask to see if they can get you a new 5100b modem for just shipping. ($6-$9 or so)

What area of Chicago are you in? If you're within 3 miles of River Grove, that would be very interesting and possibly related. If you're close to Cumberland & Montrose, that's an even higher possibility of being the same problem!

Which CO does your telephone number come out of?
Go to »/coinfo
Put in the area code & exchange of your telephone number.
If the results are "RVGVILRG", bingo, your central office is the same office as mine.

RVGVILRG serves:
708-452 708-453 708-456 708-583 708-695
847-288 847-451 847-455 847-260 773-625
773-658 773-589
My neighborhood is 773-625 and 708-456.

My next door neighbor's been complaining that for the last few months, they've been hearing static pops and cross talk (other people talking) while she's been on the phone during the day. I told her to start logging when the problems occur to see if they coorelate with my problem.

You might go back in your Network Interface box and loosen and re-tighten some of the wires. Sometimes they come loose, sometimes, they are overtightened.

The biggest pain in the butt that you'll have to go through is bending over backwards to prove the problem is not your inside wiring. The easiest way to do this is to hook the DSL modem directly into a microfilter at the NID and only hook up one phone. If you have a wireless router that reaches your apartment, that'd be good. If you can show the problem exists, even at the NID with a minimum amount of wires, then it's not your inside wiring.

When you hook up wires, do not use any flat telephone cords. Use round cords. Yes, some of the microfilters have flat cords... that's ok, because they're usually 4 inches long. If you have any CAT 3 or better cable and a crimping tool, make your own short run of wire. That would be the most ideal.

As for linebacker, you should talk to the POTS repair service, not the DSL Tier 1 problem phone number.

Make sure you don't have any television cables or power cables running near your telephone cables too, if possible.

--justbits]]> http://www.dslreports.com/forum/remark,13772659 Wed, 29 Jun 2005 11:04:02 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13768883 armyrebel4 : "For the purpose of constructing and maintaining such lines of telegraph or telephone, the parties in interest may set the necessary poles or posts on which to place the wires and insulators of such lines, in any of the public streets, highways or alleys, or in any private road leading to such highways, streets or alleys outside of the incorporated cities, villages or towns in this state along which such lines may pass: Provided, such poles or posts shall be placed along the boundaries of such highways, streets, or alleys, at such distances therefrom as the authorities having control thereof may direct. And provided further, that the wires necessary for such lines shall not be less than fifteen feet above the ground along such boundaries, and not less than twenty feet at any public or private crossing, and shall be so placed as not in any manner to interfere with such crossing.

Any person who shall unlawfully and intentionally injure, molest, or destroy any of said lines or the material or property belonging thereto, or shall in any manner interfere with the proper working of such lines, shall on conviction thereof, be deemed guilty of a petty offense and fined not exceeding $100. The fine shall be recoverable in the circuit court; Provided, that prosecution under the foregoing provision of this section shall not in any manner prevent a recovery by the person or persons entitled thereto, of the amount of damages done to such lines."

That's state law. Unless there is some kind of radiation leak lol, get cable man it's not worth the hassle.
--
“True individual freedom cannot exist without economic security and independence. People who are hungry and out of a job are the stuff of which dictatorships are made.”- FDR]]> http://www.dslreports.com/forum/remark,13768883 Tue, 28 Jun 2005 21:10:01 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13768413 anon : I unfortunately can't offer any help, but I feel deja vu reading your posts. We have had very similar problems with our SBC DSL for months now. (We live in Chicago, too.)

Lately, we've been losing our DSL connection on a very regular basis - close to once a day at this point. It used to be once every few months, and has been happening more and more often. Every time we lose the connection, I have to reset and set up our router all over again or I can't connect to the internet wirelessly with the laptop. It's incredibly frustrating, to come home from work and need to get stuff done only to find that the internet's out AGAIN and you have to unplug things and plug them back in and re-do all the router settings.... argh! Today even that didn't work - connecting the modem directly to the computer gave me a "limited or no connectivity" warning about the connection.

We are also faced with a lot of noise on the voice line, although it's cleared up somewhat since my boyfriend found and cleared out a really dense spider web/nest from our network interface box.

I can't say we've done anywhere near the techy troubleshooting that you have (can I do that data capture with my SpeedStream 5360?) but yet another call to Tier 1 tech support at SBC this evening has introduced me to the possibility of interference causing the problem. Previously we thought it was just the ancient lines in this apartment building - and it may well be that's the case after all.

Honestly, I'm really close to cancelling SBC altogether, phone and internet, and getting a cable modem and VoIP. Oh yeah, have I mentioned that even though I've paid for their "line-backer" service for 3 years, which is supposed to cover tech visits even if the problem is the lines inside the house, SBC won't come out because they claim it's my landlord's responsibility. Funny how they didn't mention that when they asked if I wanted to pay an extra $5 a month for the service.

Anyway, good luck and I'll be following your threads to see if you get anywhere. ]]> http://www.dslreports.com/forum/remark,13768413 Tue, 28 Jun 2005 20:05:52 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13727089 justbits : It is extremely unlikely that an animal or insect would cause radio frequency interference that repeats for a pretty particular duration (45 minutes) during the week and at different times on weekends and holidays.

The more likely candidates we're exploring right now are improperly filtered coaxial cable TV cables on the utility pole, the neighbor who had the improperly installed satellite TV hookup, or possibly some AC/DC motor, like a hot tub, a spa, or a excercise machine that's placed too close to telephone wires. (All of these candidates are not present within my home.)

Just thinking about it... if the person who attached their dish to the utility pole wasn't smart enough to properly install their satellite dish, it's also likely that they also do not have proper cables or filters attached to that device to prevent them from causing excessive RF interference.

--justbits]]> http://www.dslreports.com/forum/remark,13727089 Thu, 23 Jun 2005 10:51:53 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13723268 joewho : Maybe there's a wasp nest in the box on the pole...]]> http://www.dslreports.com/forum/remark,13723268 Wed, 22 Jun 2005 20:50:02 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13717707 justbits : I have tried swapping microfilters. I've had the microfilter located in the NID and inside my house. Since I've gone crazy trying to eliminate potential sources of interference, all I have is one wireless telephone hooked up to one microfilter. A whole house microfilter wont make any difference in this case.

--justbits]]> http://www.dslreports.com/forum/remark,13717707 Wed, 22 Jun 2005 07:53:41 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13717423 chris123 : Have you tried changing out your filter, or installing a proper whole house splitter? Check the for sale forum if you need to buy one.

I'm just shooting in the dark here, but I've heard other people say they go bad at times.
--
see my SBC Review @ »Review of AT&T Midwest by chris123]]> http://www.dslreports.com/forum/remark,13717423 Wed, 22 Jun 2005 05:33:42 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13707004 AlEinstein : Port change is a good idea. I'm still seeing a flucuating noise margin though. Bad ports usually throw errors and less frequently attribute flucuating noise.

I'm not into beating dead horses, or any state of a horse for that matter, but how about a new protector for sure and then a possible pair change after the port change??? Seems like not much effort in the interest of being thorough.

Einstein, OUT

Keeps us posted.

Bits, God bless ya, but you're darn close to making this into rocket science! Love those data report posts! I think my scroll bar is about worn out.

Take care, good luck]]> http://www.dslreports.com/forum/remark,13707004 Mon, 20 Jun 2005 22:59:19 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13696032 Ainshi : Just as the sound from jet engines interferes with the alien morphing devices on Stargate SG-1, so too may your phone lines be affected!]]> http://www.dslreports.com/forum/remark,13696032 Sun, 19 Jun 2005 15:22:12 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13695754 justbits : I opened this discussion to get feedback on the 5100b technician data and to get some troubleshooting ideas outside of SBC Direct and SBC ASI. I am very thankful for everybody's suggestions. One of these days, I'll consider writing some software to make monitoring the 5100b accessible to more people than just myself.

I have an extensive thread going in SBC Direct. It's been open since 5/10/2005. Unless you're privleged to read all posts in SBC Direct, don't bother going to this URL:
»[TROUBLE] Speed drop from 2400/443 to 1500/443

beach boy and crew have a CO port change scheduled for my line. I'm assuming for the DSLAM. In the meantime, I'm using dialup.

--justbits]]> http://www.dslreports.com/forum/remark,13695754 Sun, 19 Jun 2005 14:39:50 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13692929 armyrebel4 : alright, I've done as much as I can with this. I would follow up with beach boy or post in the sbc direct forum. Obvisously its interfearance coming from somewhere and you've done your best as far as what I can see. Anyone else have input on this one?
Erik
--
“True individual freedom cannot exist without economic security and independence. People who are hungry and out of a job are the stuff of which dictatorships are made.”- FDR]]> http://www.dslreports.com/forum/remark,13692929 Sun, 19 Jun 2005 01:53:01 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13691735 justbits : This morning, I did some wire checking and rewiring.

The NID has two CAT 5 cables wires running from it.

A "home run". The CAT 5 blue pairs connect to TELCO. All 3 other pairs are screwed into to NID ground which is connected to the electrical pipe ground on the back of the house.

The "POTS run". In the NID, the IW port is connected to a Z330 microfilter via a short 6 inch CAT 5 cable. The POTS side of the microfilter goes into a 8 foot CAT 5 cable. That CAT 5 cable goes into one wireless answering machine.

Inside the house, the grounded 3 pairs of wire connect to the ground on the power strip. This is done by taking the 3 pairs of wire and twisting them with another wall grade electrical wire. That wire connects via screw into a power strip ground prong. The power strip connects into a second power strip, which connects into UPS1. UPS1 is plugged into a grounded outlet. The powerstrip, UPS1 and NID all are on the same ground now. They all were before too, but I suppose it's arguably better.

From here on, nothing has changed, but I thought I'd describe it.

All outlets in the house that have grounded outlets have the ground wire screwed into the wall box. All devices are plugged into correctly grounded UPSes.

One pseudo grounded outlet screws the ground onto the electrical box outside plate. The plate is metal. The screw goes into a threaded hole that is provided by the electrical box.

I traced all ground wires to pipes and all pipes run to the house main electrical pipe inlet.

The back bedroom UPS1 is connected to a 10/100 BT switch, a Linksys router (wireless disabled), the DSL modem and a wireless answering machine. (Disconnecting and powering off the answering machine and all POTS connections has not caused the problem to go away in the past.)
The switch connects to a red Belkin 50 foot CAT 5e cable.

The red Belkin 50 foot CAT 5e cable connects to Switch 2. Switch 2 is powered by a second UPS.
UPS2 connects to computer 1 that also connects to the switch.
Switch 2 connects via CAT 5e cable to Switch 3.
Switch 2 connects via CAT 5 cable to a home media device on UPS3.
UPS3 has a TV antenna lightning strike protector on it. (I've disconnected this and seen no change in the problem while it was occurring.)

Switch 2 connects via green Belkin 50 foot CAT 5e to computer 2.
UPS3 connects to computer 2.

--justbits]]> http://www.dslreports.com/forum/remark,13691735 Sat, 18 Jun 2005 22:19:13 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13689095 armyrebel4 : Call 18006114466 ask them to run a test on your line. Explain to them exactly what you are having problems with.

When the telco tech comes out he will hook up a linemans headphone set to your nid, a high pitched noise will come from his headset showing you have dsl. He will then dial a number, it will repeat your phone number. Any noise on the line will be heard by him, you do not have to be home for this to happen. Tell repair what is happening and they will isolate it the best they can.

If this does not work, there are other service providers out there that use dry line dsl. But I will stress, these techs in the forum know what they are talking about. The last poster is a retired phone technician. RadioDoc deals with radio broadcasting equipment. Lev is the obudsman of the forum, and everyone else is students always willing to learn :). That's why it's called the funhouse.]]> http://www.dslreports.com/forum/remark,13689095 Sat, 18 Jun 2005 15:21:38 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13681977 justbits : Just a random comment... I'm pretty sure my wires run under or over train tracks. Take a look at the CO and you can see that just north of Grand Ave is a set of train tracks.

»maps.google.com/maps?ll=41.92913···=k&hl=en

Is it possible that a diesel locomotive (that uses electric motors) is idling near enough to the wire group/count/bundle and that it could be causing excessive noise at a particular repeating schedule each day? What schedule do freight train opperators usually follow?

It seems plausible that if the train operator or idling procedure changed recently, they could be idling at a different spot since Friday last week.

--justbits]]> http://www.dslreports.com/forum/remark,13681977 Fri, 17 Jun 2005 14:46:36 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13680808 justbits : This is just subjective, til I can provide recordings, but I believe I can hear noise at any time of day.
But, during the problem, the noise goes from being constant to getting louder and quieter every 30+ seconds, I think.
It's hard to keep your thoughts when you're punching digits on the phone trying to keep the line clear of dial tone or "cannot complete your call as dialed" messages.

I have some recordings, but I don't have time to clean them up or isolate the noise I'm hearing today.

I don't hear other people in the background. I didn't place any calls. I was just lifting the receiver and dialing 1-2-3-4-5-6-7 about 3 seconds apart.

I have a CAT 5 cable running from the NID into the telephone during the tests. If I were to do this test outside, the airplanes from O'Hare airport flying overhead would drown out any noise I might be able to hear myself.

telcotech: I didn't get a chance to ground the extra CAT 5 wires yet. I'll rewire the cable tonight.

By the way, here's a movie of what happened this morning.
Before 8am and after 9am, the signal looks basicly exactly the same. Around 7am, I can see a ramp-up period where the lowest download bit bins start lowering in SNR. This happens every day before the problem occurs. Sometimes, the SNR lowers, then it starts going way high and then the SNR graph goes jagged.
The DSL modem was not on all night. I still heard line noise this morning.
From 7am til 8am I was goofing around with the cables and doing recordings of just the POTS side of the world. The data from 7am til 8am will probably not be much use. The 8-9 data is kinda interesting and shows the noise I had before still exists.

Just to reitterate, the line is "clean" and produces a nice stairstep/plateau graph except for every weekday morning between 7-10am for a 30-45 minute interval.

[att=1]

--justbits

Edited for clarity of the last two sentences.
Added that it occurs for 30-45 minutes each time.

51002005061708.zip 789,871 bytes
(51002005061708.mov)

]]> http://www.dslreports.com/forum/remark,13680808 Fri, 17 Jun 2005 12:25:00 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13679427 justbits : I am in a home in a residential neighborhood just off of a main street. That main street has a straight south run to the River Grove central office. I am for all intents and purposes almost exactly directly north (as the crow flies) from the central office. (within 300 feet I think)

I'll try grounding the extra wires. Should I ground it to the house grounded outlet or to a the pipe that holds the electric wires that runs into the house on the outside of the house? Or some other suggestion? I know there are a few outlets that have the grounded prong (circular) part of the plug that grounds by attaching to a screw in the outlet box.
I've never had a problem with this for years. Why the heck would the house electrical wiring suddenly start picking up that much RFI?

As part of my electrical isolation experiment a few weeks ago, I unplugged everything in my house, except for a few essentials. (Refrigerators, DSL modem, router, computer.) Turned off ceiling fans. Turned off all electrical lights. Turned off all Wireless devices. (Answering machine, phones, etc. Disconnected the telephone also. The problem still occurred in full force.

I'll check the house's electrical outlet grounding, but I really doubt that there's anything I can do within my premesis to fix this problem. I hadn't changed any wiring (electrical or telephone or for that matter anything else) in the house when the problem started occuring. If my wiring is picking up RFI, it's gotta be a pretty strong noisy signal that's being generated somewhere near my wire group/count.

The thing is, when the problem is occurring, the ASI on-site techs could see the problem on the line. The problem is that the most recent ASI on-site tech came on Saturday morning and observed the line when the problem wasn't occuring, so they closed my trouble ticket. :-P There is a very low occurance rate for Saturdays. I left a nice note inside the NID explaining the problem in detail but they left without seeing what I saw. Go figure.

I can hear audible noise on the line in the evening and during the morning. I'll try to take a recording this morning while the problem is happening. I heard the same thing without any DSL modem hooked up. I heard the same thing with and without a DSL microfilter installed.

By the way, my father worked for AT&T and then Lucent for many years. He worked in the River Grove CO many times. He pointed out the CO building to me the other day.

This is the URL given:
»www.mapquest.com/maps/map.adp?la···7&zoom=8
at: »/coinfo
for: 773-625-xxxx (RVGVILRG).

That URL can be seen on Google as:
»maps.google.com/maps?ll=41.92835···=k&hl=en

That URL is wrong! It's not pointing at the correct building.
This URL is right: (it's the
»maps.google.com/maps?ll=41.92913···=k&hl=en
OR:
»www.mapquest.com/maps/map.adp?la···9&zoom=8

Where should I post to get the CO data on broadbandreports.com updated?

--justbits]]> http://www.dslreports.com/forum/remark,13679427 Fri, 17 Jun 2005 08:17:44 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13678402 telcotech : Looks like you have an AC motor on a timer somewhere. Even if you isolate the modems power supply, the homerun from the NID could pick up RFI.

Most of the common causes would be an electric motor or an electric heater of some type, an electric water heater, spa/hot tub, pool pump, etc... since it seems to be consistent, it would suggest that it is something on a timer or something that gets used at a specific time each day.

Do you live in an apartment building? if so, it could be a neighbor.

Try this:

1. disconnect your IW from the nid, only connect the homerun to the DSL modem when the problem starts.

2. Take the spare pairs in the IW running to the modem connect them together and ground them.

3. Check your electrical outlets, the ground should not be connected to the service neutral, it should be grounded to the house electrical ground, some older homes get upgraded and the electricians would tie the service neutral to the ground tab at the outlets to pass an inspection, this can create a differential that can act as an antenna and bring noise into your house through your electrical system. Isolating the modem with a UPS would not filter this noise out. the computer, monitor, modem router and any other device that used AC power would need to be connected to the same UPS and the UPS would need to be run on backup battery power to actually isolate this type of interference.

4. If telco comes out again, have them check the bonding on the drop, it should be grounded at the NID or the PED or both.]]> http://www.dslreports.com/forum/remark,13678402 Fri, 17 Jun 2005 01:20:40 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13675143 justbits : Just wanted to add that I isolated the DSL modem on a UPS the other morning and yanked the wall socket while the noisy interferror was occuring. Isolating the DSL modem to a UPS for 25 minutes didn't make the noisy interferror go away.

--justbits]]> http://www.dslreports.com/forum/remark,13675143 Thu, 16 Jun 2005 18:08:09 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13675030 justbits : Here's a summary of what I've been up to.

Last night, I compared 3 different modems data results to see how they all compared.
I have a 5660 (v2.3.0(7)).
I have a 5100b (v1.0.0.44).
I have a ADSL2/2+ diagnostic analyzer capable modem also. (Don't ask.) I'll refer to this as "PRIVATE".

Here's the results of plugging them in and forcing them to resync just a minutes or two apart from eachother.

These data points are to get a relative accuracy of the statistics provided by the different modems.

The line is configured for 1.5/384 Interleaved at this point.

2005/06/15 8:10pm 5100b
SNR: 16.0
ATN: 58.5
DMT: 472 bit bins


20050615/201033.txt
DMT SNR Data
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  17.5  17.5  17.5  17.5  17.0  17.0  17.0  17.0  17.0   17.0
 
   333d
17.0  16.5  16.5  17.0  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5   16.5
 
   333e
 0.0  16.5  16.5  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333f
16.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.5  16.0  16.0  16.0  16.0   16.0
 
   333g
16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.5  16.0  16.5  16.0  16.0  16.0  16.0   16.0
 
   333h
16.0  16.0  17.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.5    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   9   9   9   9   9   8   8
 
   334d
 8   8   8   8   8   8   8   8   8   8   8   8   7   7   7   7
 
   334e
 0   7   7   6   6   6   6   6   6   6   6   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   5   5   5   5   5   5   5   5
 
   334g
 5   5   5   4   4   4   4   4   4   4   4   4   4   4   3   3
 
   334h
 3   3   2   2   2   2   2   2   2   2   2   2   2   2   2   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

2005/06/15 8:15pm 5660
Current Attainable Rate 573134 3200000
Current SNR Margin 13.5 16.0
Current Attenuation 59.0 31.5
Current Output Power 4.0 17.5

2005/06/15 8:17pm 5660. Changed some wires and resynced.
Current Attainable Rate 573134 3200000
Current SNR Margin 12.5 16.0
Current Attenuation 58.0 31.5
Current Output Power 4.0 17.5

2005/06/15 8:19pm 5660. Sampled again
Current Attainable Rate 573134 3200000
Current SNR Margin 13.5 16.0
Current Attenuation 58.5 31.5
Current Output Power 4.0 17.5

2005/06/15 8:20pm PRIVATE modem
SNR: 11.4 16.0
ATN: 62.5 31.5
PWR: 3.1 17.5
RAT: 2528 1088

2005/06/15 8:23pm PRIVATE (with noise margin checking)
SNR: 16.0 16.0
ATN: 62.0 31.5
PWR: 3.2 15.5
RAT: 3200 1088

2005/06/15 8:26pm PRIVATE (in ADSL2 diagnostic mode.)
SNR: 16.1 16.0
ATN: 62.0 31.5
PWR: 2.8 15.3
RAT: 3232 1100

2005/06/15 8:45pm PRIVATE (forced resync)
SNR: 16.5 16.0
ATN: 62.0 31.5
PWR: 2.8 14.9
RAT: 3328 1100

2005/06/15 8:56pm PRIVATE (another sample)
SNR: 16.1 16.0
ATN: 62.5 31.5
PWR: 2.9 14.9
RAT: 3328 1096

2005/06/15 9:10pm 5100b
SNR: 16.0
ATN: 58.0
DMT: 472 bits


20050615/211000.txt
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  17.5  17.5  17.5  17.5  17.0  17.0  17.0  17.0  17.0   17.0
 
   333d
17.0  17.0  17.0  17.0  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5   16.5
 
   333e
 0.0  16.5  16.5  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333f
16.0  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.5  16.0  16.5   16.0
 
   333g
16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.5
 
   333h
16.0  16.0  17.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.5    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   9   9   9   9   9   9   9
 
   334d
 9   8   8   8   8   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   7   7   6   6   6   6   6   6   6   6   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   4   5   5   5   5   5   5   5
 
   334g
 5   5   5   5   4   4   4   4   4   4   4   4   4   4   3   3
 
   334h
 3   3   2   2   2   2   2   2   2   2   2   2   2   2   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

---------------------------------------------------

This morning.
Here's what it looked like after 9 hours.
20050616/070000.txt


   32 Time Since Last Sync 000 days 09:48:05
 
     Rx Tx
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 14.0 -
   146 Current LATN - -
   147 Current SATN 58.0 -
   148 Current TP - 0.0
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  16.5  16.5  16.5  16.0  16.5  16.0  16.5  16.0   16.0
 
   333d
16.0  17.0  17.0  15.5  16.5  16.0  16.0  16.0  16.5  16.0  16.0  16.0  15.5  15.5  15.0   15.0
 
   333e
 0.0  15.0  15.0  15.0  15.0  15.0  15.0  15.0  15.0  15.0  15.0  15.0  15.5  15.0  15.0   15.0
 
   333f
15.0  14.5  15.0  15.0  15.0  15.0  15.0  15.5  16.0  14.0  15.0  15.0  15.5  15.0  15.0   16.0
 
   333g
15.0  15.5  15.0  15.5  14.5  15.0  15.5  15.0  15.0  14.5  14.5  14.5  15.0  15.5  15.5   14.5
 
   333h
15.0  14.5  14.5  14.5  14.5  15.0  15.0  14.5  15.0  14.5  14.5  15.0  14.0  16.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   9   9   9   9   9   9   9
 
   334d
 9   8   8   8   8   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   7   7   6   6   6   6   6   6   6   6   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   4   5   5   5   5   5   5   5
 
   334g
 5   5   5   5   4   4   4   4   4   4   4   4   4   4   3   3
 
   334h
 3   3   2   2   2   2   2   2   2   2   2   2   2   2   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

By 7:15, the modem showed that the noisy interferror was starting up...


   32 Time Since Last Sync 000 days 10:03:02
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 15.5 -
   146 Current LATN - -
   147 Current SATN 58.0 -
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.0  16.0  16.5  15.5  16.0  16.5  16.0  16.0  16.5   16.5
 
   333d
16.5  18.0  18.0  17.0  17.5  17.5  17.5  17.5  18.5  18.5  18.0  18.0  17.5  17.5  17.5   17.5
 
   333e
 0.0  17.5  17.5  17.5  17.5  17.5  17.5  17.5  17.5  17.5  17.5  18.0  18.0  17.5  17.5   17.5
 
   333f
17.0  16.5  17.0  16.5  16.0  16.0  16.0  16.0  17.0  15.5  15.5  16.0  16.0  16.0  16.0   17.0
 
   333g
16.0  16.0  16.0  17.0  16.5  16.5  17.5  18.0  17.5  17.0  17.0  18.0  18.5  18.5  18.5   18.5
 
   333h
18.5  19.0  18.5  19.0  19.0  19.0  19.0  19.0  19.0  18.0  18.0  18.5  17.0  18.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   9   9   9   9   9   9   9
 
   334d
 9   8   8   8   8   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   7   7   6   6   6   6   6   6   6   6   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   4   5   5   5   5   5   5   5
 
   334g
 5   5   5   5   4   4   4   4   4   4   4   4   4   4   3   3
 
   334h
 3   3   2   2   2   2   2   2   2   2   2   2   2   2   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

I power cycled the modem to see if it would reallocate the DMT bits. Sure enough, it did!


   32 Time Since Last Sync 000 days 00:00:46
     Rx Tx
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 16.0 -
   146 Current LATN - -
   147 Current SATN 58.5 -
   148 Current TP - 0.0
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  17.5  17.0  17.0  17.0  17.0  17.0  17.0  17.0  17.0   17.0
 
   333d
17.0  17.0  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.0  16.0  16.5  16.5  16.0   16.0
 
   333e
 0.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333f
16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.0  15.5  16.0  16.0  16.0  16.0  16.0   16.0
 
   333g
16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333h
16.0  16.0  16.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   9   9   9   9   9   9   9   9
 
   334d
 9   9   9   9   9   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   7   7   6   6   6   6   6   6   6   6   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   5   4   4   5   4   5   5   5
 
   334g
 4   4   4   4   4   4   4   4   4   4   4   4   4   4   3   3
 
   334h
 3   3   3   2   2   2   2   2   2   2   2   2   2   2   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

I decided to call ASI. I had ASI change my line from 1.5/384 INTL to 1.5/384 FAST this morning while the "noise source" was occuring. The line didn't drop sync (except when I was rebooting the modem or forcing a resync), but the noisy interferror was still present. The ASI tech I talked to couldn't see any problem on the line even though the 5100b could.

In Interleaved (INTL) mode, the 5100b was able to squeeze in 474 DMT bits.
5100-20050616/081800.txt.png
SNR: 14.5
ATN: 59.5
DMT: 474 bit bins


   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  16.5  14.5  17.0  17.5  17.5  17.0  17.0  17.0   16.0
 
   333d
15.5  16.5  16.5  14.5  16.5  16.5  16.5  16.5  16.5  16.5  18.0  16.5  16.5  16.5  16.5   16.5
 
   333e
 0.0  16.0  16.0  16.5  16.5  17.5  17.0  16.0  16.0  17.5  15.5  15.0  16.0  15.0  15.0   15.5
 
   333f
19.0  16.5  16.5  16.0  15.5  16.5  16.0  14.5  15.0  16.0  16.0  16.5  16.0  16.0  15.5   16.0
 
   333g
16.5  16.0  15.0  15.5  15.5  15.5  16.5  16.0  16.0  16.5  16.0  16.0  16.0  16.0  16.0   16.0
 
   333h
15.5  15.5  15.5  15.5  16.0  16.0  15.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0  16.0  16.0  16.5   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   4   4   4   5   5   5   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   8   9   9   9   9   9   8   9   9   9
 
   334d
 9   9   9   8   9   9   8   8   9   9   7   8   8   8   7   7
 
   334e
 0   6   6   7   6   5   6   6   5   2   5   5   2   4   5   5
 
   334f
 3   5   5   4   4   5   5   5   5   5   5   4   5   5   4   4
 
   334g
 5   5   3   5   5   5   4   4   4   4   4   4   4   3   4   3
 
   334h
 3   3   3   3   2   2   2   2   2   2   2   2   2   2   2   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   2   2   2   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

I suspect that when it's in INTL mode, it allocates significantly more bits for error correction purposes.
5100-20050616/081900.txt
SNR: 13.5
ATN: 59.5
DMT: 476 bit bins


   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  16.5  16.0  16.5  17.0  16.0  15.5  16.5  17.0   18.0
 
   333d
17.0  16.5  16.5  16.0  16.5  16.5  16.0  15.5  16.5  16.5  17.5  17.0  16.5  16.5  16.5   16.5
 
   333e
 0.0  15.0  15.5  16.0  16.5  17.0  16.5  16.5  16.5  16.5  16.5  16.0  14.0  15.0  16.0   16.0
 
   333f
18.5  16.0  16.0  16.5  16.5  16.5  16.0  14.0  15.5  16.5  16.0  16.5  16.5  16.0  16.5   16.5
 
   333g
16.5  15.5  12.5  15.5  16.0  16.0  16.0  16.5  16.5  16.5  16.5  16.5  16.5  15.5  16.5   16.5
 
   333h
16.5  16.5  17.0  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.0  16.0   16.0
 
   333i
 0.0   0.0   0.0   0.0   0.0  16.0   0.0   0.0  16.0  16.0   0.0  16.5  16.0  16.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   4   4   5   5   6   6   6   6   7
 
   334b
 7   7   7   7   7   6   6   6   5   5   5   4   4   3   0   0
 
   334c
 0   0   0   0   0   0   8   9   8   9   9   9   9  10   9   8
 
   334d
 9   9   9   7   9   9   9   9   9   8   7   7   8   8   7   7
 
   334e
 0   7   7   7   6   4   6   6   5   2   5   5   3   4   5   5
 
   334f
 3   5   5   4   3   5   5   5   5   5   5   4   5   5   4   3
 
   334g
 5   5   4   5   5   4   4   4   4   3   3   4   4   3   3   3
 
   334h
 3   3   2   2   2   2   2   2   2   2   2   2   2   2   2   2
 
   334i
 0   0   0   0   0   2   0   0   2   2   0   2   2   2   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

In FAST mode a short while later, the modem could only allocate 440 DMT bits.
5100-20050616/083200.txt
SNR: 14.5
ATN: 58.5
DMT: 440 bit bins


   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.0  16.5  15.5  16.5  16.5  16.5  16.5  16.5  16.5   17.0
 
   333d
16.5  16.0  16.0  15.5  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.5  16.0  16.0  16.0   16.0
 
   333e
 0.0  16.0  16.0  16.0  16.0  15.5  16.0  16.0  15.5  14.5  16.0  16.0  16.0  16.0  16.0   16.0
 
   333f
16.0  16.0  16.0  15.0  14.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   15.0
 
   333g
16.0  16.0  15.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333h
16.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   4   5   5   6   6   6
 
   334b
 6   6   7   7   6   6   6   6   5   5   5   4   4   4   0   0
 
   334c
 0   0   0   0   0   0   8   8   8   9   9   9   9   9   9   7
 
   334d
 9   9   9   7   9   9   8   8   8   8   7   7   7   7   7   7
 
   334e
 0   7   6   6   6   3   6   5   5   2   5   5   4   5   5   5
 
   334f
 2   5   5   4   3   5   5   5   5   5   5   3   5   4   3   3
 
   334g
 4   4   4   4   4   4   3   4   4   3   3   3   3   3   3   3
 
   334h
 3   2   2   2   2   2   2   2   2   2   2   2   2   2   2   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

Swapped in a 5660 at 8:33am:
Current Attainable Rate 492307 3134693
Current SNR Margin 9.0 16.0
Current Attenuation 58.0 31.5
Current Output Power 5.5 17.5

2005/06/16 8:35am: 5660 (forced resync)
Current Attainable Rate 492307 3134693
Current SNR Margin 10.0 16.0
Current Attenuation 59.0 31.5
Current Output Power 5.5 17.5

PRIVATE modem at 8:36am:
SNR 14.6 16.0
ATN 62.5 31.5
PWR 4.6 16.9
RAT 2656 1016

Forced DSL resync.
PRIVATE modem at 8:41am:
SNR 14.1 16.0
ATN 62.5 31.5
PWR 4.8 16.8
RAT 2560 1012

8:49 5100b (back to normal)
SNR 15.0
ATN 58.5
DMT 437 bit bins


   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  16.5  17.0  17.0  17.0  17.0  16.5  17.0  16.5   16.5
 
   333d
16.5  16.5  16.5  15.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  15.5  16.0   15.5
 
   333e
 0.0  15.5  15.5  15.5  16.0  15.5  15.5  15.5  16.0  16.0  15.5  16.0  16.0  16.0  16.0   15.5
 
   333f
15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.0  15.5  15.5  15.5   15.5
 
   333g
15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5   16.5
 
   333h
16.0  15.5  15.5  15.5  15.5  15.5  15.5  15.5  15.5   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   4   5   5   6   6   6
 
   334b
 6   7   6   6   7   6   6   6   5   5   5   4   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   8   9   9   9   9   9   9
 
   334d
 9   9   8   8   8   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   6   6   6   6   6   5   5   5   5   5   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   5   5   5   4   4   4   4   4
 
   334g
 4   4   4   4   4   4   4   3   3   3   3   3   3   3   3   2
 
   334h
 2   2   2   2   2   2   2   2   2   0   0   0   0   0   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

8:54
Current Attainable Rate 505263 3134693
Current SNR Margin 11.0 16.0
Current Attenuation 59.0 31.5
Current Output Power 5.5 17.5

8:59 5100b
SNR: 16.0
ATN: 58.5
DMT: 437 bit bins


   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  17.0  16.5  17.0  16.5  16.5  17.0  16.5  16.5   16.5
 
   333d
16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.0  16.5   16.0
 
   333e
 0.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.5  16.5  16.5   16.0
 
   333f
16.0  16.5  16.5  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.5  16.0   16.0
 
   333g
16.5  16.0  16.0  16.0  16.0  16.5  16.0  16.5  16.0  16.5  16.5  16.0  16.0  16.0  16.5   17.0
 
   333h
16.5  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.5   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   5   5   6   6
 
   334b
 6   7   6   6   7   6   6   6   5   5   5   4   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   9   9   9   9   9   9   9
 
   334d
 9   9   9   9   8   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   6   6   6   6   6   6   5   5   5   5   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   4   4   4   4   4   4   4   4   4
 
   334g
 4   4   4   4   4   4   4   3   3   3   3   3   3   3   3   2
 
   334h
 2   2   2   2   2   2   2   2   2   0   0   0   0   0   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

The effects of the noise source disappeared when I rebooted the modem at noon. The high SNR peak values seem to indicate that it is underutilizing a particular DMT tone frequency.

Right before reboot it has some high SNR peaks:


   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  12.5  13.5  15.0  14.5  15.5  17.0  20.0  16.5  17.0   21.0
 
   333d
17.5  16.5  16.5  16.5  16.5  16.5  18.0  18.0  16.5  16.5  18.0  16.5  16.5  16.0  16.0   16.0
 
   333e
 0.0  17.0  17.0  16.0  16.5  24.0  17.0  16.5  19.0  27.5  17.5  17.0  22.5  19.5  16.0   16.0
 
   333f
26.0  16.5  17.0  19.5  25.0  18.0  17.0  19.0  17.5  16.5  16.5  17.5  16.5  17.0  19.5   20.5
 
   333g
16.5  16.5  22.0  17.0  16.5  16.5  17.5  16.5  16.5  17.0  17.0  16.0  16.0  17.5  16.0   16.0
 
   333h
16.0  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5   0.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   4   5   5   5   6   6
 
   334b
 6   7   7   6   7   6   6   6   5   5   5   4   4   4   0   0
 
   334c
 0   0   0   0   0   0   8   8   8   9   9   9   8   9   9   8
 
   334d
 9   9   9   9   9   9   8   8   8   8   8   8   8   7   7   7
 
   334e
 0   6   6   6   6   3   6   6   5   2   5   5   3   4   5   5
 
   334f
 2   5   5   4   2   5   5   4   5   5   5   4   5   4   4   3
 
   334g
 4   4   2   4   4   4   4   4   4   3   3   3   3   3   3   3
 
   334h
 3   3   2   2   2   2   2   2   2   2   2   2   2   0   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

After reboot the high SNR peaks are gone and the modem starts using bits it previously was not using:
5100-20050616/121600.txt


     Rx Tx
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 16.0 -
   146 Current LATN - -
   147 Current SATN 58.5 -
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  16.5  16.5  16.5  16.5  16.5  17.0  16.5  16.5   16.5
 
   333d
16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.0   16.5
 
   333e
 0.0  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333f
16.0  16.0  16.5  16.0  16.5  16.5  16.0  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0   16.5
 
   333g
16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.5   16.5
 
   333h
16.0  16.0  16.0  16.5  16.0  16.5  16.0  16.5  16.5   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   4   5   5   6   6   6
 
   334b
 6   6   7   7   6   6   6   6   5   5   5   4   4   4   0   0
 
   334c
 0   0   0   0   0   0   7   8   8   9   9   9   9   9   9   9
 
   334d
 9   9   9   8   8   8   8   8   8   8   8   7   7   7   7   7
 
   334e
 0   6   6   6   6   6   5   5   5   5   5   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   5   5   5   4   4   4   4   4
 
   334g
 4   4   4   4   4   4   4   3   3   3   3   3   3   2   2   2
 
   334h
 2   2   2   2   2   2   2   2   2   0   0   0   0   0   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

If I have some time later, I'll post the graphical versions of the data.

--justbits
]]> http://www.dslreports.com/forum/remark,13675030 Thu, 16 Jun 2005 17:56:05 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13668476 justbits : I've only had pairs switched once, but it took a few tries for them to find a "good" pair.

I'll try just hooking up the phone and making calls during the problem period if I can.]]> http://www.dslreports.com/forum/remark,13668476 Wed, 15 Jun 2005 22:45:27 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13667890 armyrebel4 : This one has me puzzled, SNR went up which is good. Attenuation is maxing out, which means signal loss but I had it maxed out at 60 and was getting good dsl.

Dish is removed.

Call pots repair and have them test the line.

Only thing I can think of is your line could be crossed, when your on the phone do you hear people in the background? Any echos? Scratching noise? (From the NID test outlet.)

If they switched the pairs that many times, I don't know what else to say.]]> http://www.dslreports.com/forum/remark,13667890 Wed, 15 Jun 2005 21:29:28 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13663226 justbits : For the curious, who can't read DMT/SNR data, here's what I believe it looks like graphically.

7:25am
[att=1]

8:00am
[att=2]

10:10am
[att=3]

10:20am
[att=4]

--justbits

]]> http://www.dslreports.com/forum/remark,13663226 Wed, 15 Jun 2005 11:56:37 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13663195 justbits : Here's an example of the data as the problem was occurring this morning. I was screwing around with the wires this morning before 8:00am. The wiring hasn't changed since then. I thought I'd provide 4 samples. (I have samples for every 60 seconds this morning.)

7:25am (during problem period) (v1.0.0.39)
8:00am (during problem period - after replugging some wires)
10:10am (after problem period)
10:20am (after rebooting the modem)

During the problem : 20050616/072500.txt


   CRC Errors                  2          5
 
   32 Time Since Last Sync 000 days 00:07:55
 
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 7.5 -
   146 Current LATN - -
   147 Current SATN 58.5 -
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  16.0  16.5  15.5  16.0  16.0  14.5  16.0  16.0    9.5
 
   333d
15.0  16.0  15.5   9.0  16.5  16.5  14.0  13.0  16.5  16.5  15.0  16.5  16.5  16.5  16.5   16.5
 
   333e
 0.0  15.0  15.0  16.0  16.0   8.0  15.5  15.0  12.5   7.0  14.0  13.5   8.0   9.5  14.0   15.0
 
   333f
12.5  15.5  15.5  15.0  13.0  15.5  15.5  13.0  15.0  16.0  16.0  12.0  16.0  15.5  12.5   11.0
 
   333g
15.5  16.0  11.5  15.5  16.0  16.0  15.5  16.0  16.0  16.0  16.0  16.0  16.0  15.5  16.0   16.0
 
   333h
17.0  16.0  16.0  16.0  16.0  16.0  16.0  16.5  16.0  16.0  16.0  16.0  16.0   0.0   0.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   4   4   4   5   5   6   6   6   6
 
   334b
 6   7   7   7   7   7   6   6   6   5   5   5   4   4   0   0
 
   334c
 0   0   0   0   0   0   8   8   9   9   9   9   9   9   9   9
 
   334d
 9   9   9   9   9   9   9   8   8   8   8   8   7   7   7   7
 
   334e
 0   7   6   6   6   6   6   5   5   4   5   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   5   5   5   5   5   5   5   5
 
   334g
 4   5   5   5   4   4   4   4   4   4   4   4   4   3   4   3
 
   334h
 2   2   2   2   2   2   2   2   2   2   2   2   2   0   0   0
 
   334i
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

During the problem : 20050616/080000.txt


   CRC Errors                  2          5
     Rx Tx
 
    32 Time Since Last Sync 000 days 00:05:00
 
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 15.5 -
   146 Current LATN - -
   147 Current SATN 59.5 -
   148 Current TP - 0.0
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  16.5  17.5  20.5  17.5  18.0  18.5  21.0  17.5  17.5   21.0
 
   333d
17.0  16.5  17.0  23.0  16.5  17.0  19.0  19.5  17.0  16.5  19.0  16.5  16.5  16.5  16.5   16.5
 
   333e
 0.0  19.0  19.0  17.0  16.5  23.5  16.5  16.5  18.0  27.0  17.5  19.0  25.5  19.0  17.5   17.0
 
   333f
25.0  15.5  17.0  18.0  20.5  17.0  17.0  19.5  18.0  16.5  16.5  20.5  16.5  16.5  19.0   20.0
 
   333g
16.5  17.0  23.5  17.0  16.0  16.0  18.5  16.0  16.0  16.5  16.5  16.0  16.0  16.5  16.0   16.0
 
   333h
16.0  16.0  16.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0  16.0   0.0   0.0  16.0  16.0  16.5  16.0  16.5   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   5   5   5   5   5   4   0   0
 
   334c
 0   0   0   0   0   0   8   9   9   9   9   9   8  10  10   8
 
   334d
10  10   9   8   9   9   8   8   8   8   8   8   8   8   7   7
 
   334e
 0   6   6   6   6   4   6   5   5   2   5   4   2   3   5   5
 
   334f
 2   5   5   4   4   5   5   4   5   5   5   4   5   5   5   4
 
   334g
 5   5   2   5   5   5   3   4   4   4   4   4   4   4   4   4
 
   334h
 3   3   3   2   2   2   2   2   2   2   2   2   2   2   2   0
 
   334i
 0   0   0   0   0   2   0   0   2   2   2   2   2   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

After the problem : 20050616/101000.txt


   CRC Errors                  3          5
 
   32 Time Since Last Sync 000 days 02:14:34
 
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 14.5 -
   146 Current LATN - -
   147 Current SATN 59.5 -
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  14.5  15.0  16.0  15.5  15.5  14.5  15.0  16.0  15.5   16.0
 
   333d
15.0  16.0  16.5  18.5  16.5  16.5  16.5  15.5  16.5  16.5  14.5  16.0  16.5  16.5  16.5   16.5
 
   333e
 0.0  16.0  17.0  16.5  16.0  14.5  16.0  16.5  15.5  16.5  16.5  18.0  19.0  17.0  17.0   16.5
 
   333f
15.5  15.0  16.0  14.5  14.5  15.5  16.5  17.5  16.5  16.0  16.0  16.5  15.0  15.5  15.0   15.5
 
   333g
15.5  15.5  17.5  16.0  15.5  16.0  17.5  16.0  16.0  15.5  15.5  15.5  15.5  15.0  16.0   16.0
 
   333h
16.0  16.0  16.0  17.0  16.5  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0    0.0
 
   333i
 0.0   0.0   0.0   0.0   0.0  16.0   0.0   0.0  16.0  16.0   0.0  16.0  17.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   3   4   4   5   5   6   6   6   6
 
   334b
 7   7   7   7   7   7   6   6   5   5   5   5   5   4   0   0
 
   334c
 0   0   0   0   0   0   8   9   9   9   9   9   8  10  10   8
 
   334d
10  10   9   8   9   9   8   8   8   8   8   8   8   8   7   7
 
   334e
 0   6   6   6   6   3   6   5   5   2   5   4   4   3   5   5
 
   334f
 2   5   5   4   4   5   5   4   5   5   5   5   5   5   5   4
 
   334g
 5   5   2   5   5   5   3   4   4   4   4   4   4   4   4   4
 
   334h
 3   3   3   2   2   2   2   2   2   2   2   2   2   2   2   0
 
   334i
 0   0   0   0   0   2   0   0   2   2   0   2   2   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

After rebooting the modem a few minutes later:
20050615/102000.txt


   CRC Errors                  2          5
 
   32 Time Since Last Sync 000 days 00:00:43
 
   140 Current Rate 1536 384
   141 Previous Rate 0 0
   142 DSL Max Rate - -
   143 DSL Min Rate - -
   144 Current ATTN DR 1536 -
   145 Current SNRM 16.0 -
   146 Current LATN - -
   147 Current SATN 59.5 -
 
   333 Receive SNR ps
   333a
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333b
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333c
 0.0   0.0   0.0   0.0   0.0   0.0  17.0  17.0  17.0  17.0  17.0  17.0  17.5  17.0  17.0   17.0
 
   333d
17.0  17.0  17.0  17.0  17.0  17.0  16.5  16.5  16.5  16.5  16.5  16.5  16.5  16.0  16.5   16.5
 
   333e
 0.0  16.0  16.5  16.0  16.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.5
 
   333f
16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333g
16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.5
 
   333h
16.0  16.0  16.0  16.5  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0  16.0   16.0
 
   333i
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0  16.0  16.0  16.0  16.0   0.0   0.0   0.0    0.0
 
   333j
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333k
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333l
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333m
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333n
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333o
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   333p
 0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0    0.0
 
   334 ADSL DMT Bin Bits
   334a
 0   0   0   0   0   0   0   4   4   4   5   5   5   6   6   6
 
   334b
 6   7   7   7   7   7   6   6   6   5   5   5   5   4   0   0
 
   334c
 0   0   0   0   0   0   4   5   6   6   7   7   8   8   8   8
 
   334d
 9   9   9   9   9   9   9   9   8   8   8   8   8   7   7   7
 
   334e
 0   7   7   6   6   6   6   6   6   6   5   5   5   5   5   5
 
   334f
 5   5   5   5   5   5   5   5   5   5   5   5   5   5   5   5
 
   334g
 5   5   5   5   5   4   4   4   4   4   4   4   4   3   3   3
 
   334h
 3   3   3   2   2   2   2   2   2   2   2   2   2   2   2   2
 
   334i
 0   0   0   0   0   0   0   0   2   2   2   2   0   0   0   0
 
   334j
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334k
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334l
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334m
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334n
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334o
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
 
   334p
 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

I might be seeing coorelating trends in ECL and CVL. What do those stand for?

--justbits
]]> http://www.dslreports.com/forum/remark,13663195 Wed, 15 Jun 2005 11:53:15 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13662472 lev : I've asked, a couple times now, for you to repost those results during difficulty after having made that adjustment we talked about.

Outage at a particular frequency is common. Which frequencies can tell if you have cordless phones, poor filters, etc.

Since the data should be more reliable now, could you please repost?]]> http://www.dslreports.com/forum/remark,13662472 Wed, 15 Jun 2005 10:03:43 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13662307 justbits : The lightning strike protector hasn't been changed as far as I know.
The NID has not been replaced since it was first installed in 2001. (For Rhythms Telocity service. I had 784/784 SDSL once upon a time.)

Since I started reading 5100b data, the modem has never been able to squeeze any DMT bits in sample 64 nor around sample 130. (Take a look at the charts I previously posted. Is that normal?

--justbits]]> http://www.dslreports.com/forum/remark,13662307 Wed, 15 Jun 2005 09:36:22 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13660274 AlEinstein : bits,

just thought of one more thing.

Has network ever changed out your "protector" (lightning/power surge fuse) in the nid? Sometime these cause trouble and can't really be picked up on the test set except for by a trained eye and even then can easily be missed or not picked up by the test set.

This should be replaced just for good measure. Its on the network side of the nid/dmarc and can be accessed by either tech, network or asi. Technically its the networks techs job to test/replace it, but they're not always alert to this type of problem and since its on the network side of the nid, asi isn't always aware of this issue either. Basically it can be faulty (albeit slightly) and pass dial tone no problem but will mess with the DSL sig.

Please don't ask how I know this! Just ask one of the techs to change it for a new one for grins and giggles, NO ONE is out anything by doing it.

Also, a 3 year old aerial service wire is pretty darn new unless there is damage from storms or critters.

FYI

BTW, if your entire nid has been changed, very recently, during your whole trouble experience that is, then these protectors come new with the nid.]]> http://www.dslreports.com/forum/remark,13660274 Tue, 14 Jun 2005 23:41:59 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13660159 justbits : I am fed by ariel wire feed. That ariel feed has not been replaced in about 3 years.

Sometime this week, I'll be replacing the ground wire running to my chimney antenna. I'll also try disconnecting the TV antenna from the house electronics if I'm around when the problem occurs.

I don't get good cell reception in spots in my back yard where I can't see the cell tower. When I'm in line-of-sight, I get good reception. It's about 1000 feet away and on top of an apartment complex. The NID is not within line of sight with the cell tower.

--justbits]]> http://www.dslreports.com/forum/remark,13660159 Tue, 14 Jun 2005 23:27:59 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13660088 armyrebel4 : This just pops up in my mind what condition is the wire coming up to your house? Is your house ariel fed or is it underground? Because when the techs come out to test your interface box they get a chirping noise on the linemans phone when there is dsl active on the line.

When the ASI Tech or the POTS Tech(your not RT fed) comes out to your house they do a signal strength test on the line. Then they get a whole slew of readouts.

If that dish is causing your rf frequency the wire is not shielded and the way they installed that dish is against state law. I bet you it's that box that picks up the signal for the dish.]]> http://www.dslreports.com/forum/remark,13660088 Tue, 14 Jun 2005 23:19:11 EDT Re: Any 5100b technician page DMT/SNR data experts http://www.dslreports.com/forum/remark,13659897 AlEinstein : bits,

I'm not very strong on the radio interference thing like some of the guys here are EG RadioDoc etc.

I have had some experience with the T1 and "highcap" interference. 1 time it was solved by moving to a completly differenct "count" and the other time was solved by moving to an RT.

By the sounds of it moving to an RT isn't going to work for you.

If you're in a predominitely residential area then your "F2" lead shouldn't have many if any T1's. You mentions 9 (I think) T1's in your "wire bundle" I take it you've learned that from one or more of your many service calls from either network or asi. My question is, Are the T1's in the F1 lead or the F2 lead?. If they're in the F1 lead than you can definitely get changed to an entirely different "count/group" or "wire bundle" as you put it. Thereby getting away from, potentially, the T1 interference. But...If the T1's are in the F2 feed then your options are quite possibly narrowed. You still may be able to change your counts but there are some dependencies with that.

At the end of the day, you've done an excellent job with your docs and research. Kudos! The flip side is that the situation is what it is, and is difficult to say if there really is a solution. The T1's are definitely higher on the totem pole than the lowly dsl circuit is! :( DOOOOH!

Keep up posted]]> http://www.dslreports.com/forum/remark,13659897 Tue, 14 Jun 2005 22:59:00 EDT Re: Any 5100b technician page DMT/SNR data experts? http://www.dslreports.com/forum/remark,13645168 justbits : I don't believe I am near any AM transmitters.

Someone said that a T1 that's active could cause this kind of interference. I've doubted that all along. But, when there's supposedly "9 T1s in the same wire bundle as your pair", I suppose that sounds plausible, but the harmonic frequency interference doesn't seem to indicate T1 interference, does it?

I started noticing the problem on May 1st. It may have been going on significantly earlier than that start date. It may have been going on as early as September/October of 2004. I do recall connections dropping in the morning as far back as then, but I thought it was due to a faulty T1 modem that we had put in at my workplace 20 miles away from my residence (because I was working offsite at a customer 40 miles away from home & work using SSH tunnels within a SSH tunnel.)
I web surf every day, but May 1st was the first time that DSL was down for 30+ minutes. May 8th was the second time, which is when I really started to keep a log of the problem.
Basically, from August 2004 til May 2005, I was working at a remote site every day and using my workplace T1 as a tunnelling entry point. Since May 1, 2005, I've been relying on my home DSL as a tunnelling entry point. In the past, I would do frequent Saturday morning web surfing, but I never noticed a loss of DSL sync.

Here's a log that I've been keeping. Times in the PPPoE log are when the line lost sync. Duration of poor signal is unknown for those log entries.

Times in the 5100b section describe a loss of sync, followed by a period of poor signal. Since my pair replacement on 6/3, and the knocking of the speed down to 768/384, the loss of sync doesn't occur, so I have to reboot the modem nightly in order to clear up to signal so I can see when the problem situation occurs the next morning. If I was in a higher profile (1.5/384) the line would lose sync.


----------- SpeedStream 5360 in use.
----------- Logged loss of pppoe (observed loss of DSL sync):
May  4 08:22:05 firebox pppd[7618]: Connect time 1274.5 minutes.   
 
(Lost log data for May 5 through May 8th)
 
Mon May  9 07:55:14 firebox pppd[28253]: Connect time 0.4 minutes.
Mon May  9 07:56:58 firebox pppd[28442]: Connect time 0.6 minutes.
Mon May  9 09:39:59 firebox pppd[28870]: Connect time 98.4 minutes.
Mon May  9 10:49:53 firebox pppd[28870]: Connect time 69.8 minutes.
 
Tue May 10 08:25:52 firebox pppd[31539]: Connect time 1282.7 minutes.
Tue May 10 09:56:11 firebox pppd[13376]: Connect time 1.2 minutes.
 
Wed May 11 09:18:24 firebox pppd[19720]: Connect time 832.3 minutes.
 
(Lost log data for May 12th)
 
Fri May 13 09:41:16 firebox pppd[26561]: Connect time 1.0 minutes.
 
Sat May 14 08:19:34 firebox pppd[26889]: Connect time 1355.1 minutes.
Sat May 14 11:26:20 firebox pppd[26889]: Connect time 186.8 minutes.   
Sat May 14 11:28:16 firebox pppd[26889]: Connect time 1.9 minutes.
Sat May 14 12:56:13 firebox pppd[10098]: Connect time 86.9 minutes.
 
Sun May 15: no drop.
 
Mon May 16 07:14:50 firebox pppd[29602]: Connect time 708.5 minutes.
Mon May 16 07:20:23 firebox pppd[4266]: Connect time 5.1 minutes.
Mon May 16 11:01:02 firebox pppd[4545]: Connect time 219.0 minutes.
Mon May 16 11:01:02 firebox pppd[4545]: Connect time 219.0 minutes.
 
Tue May 17 08:10:06 firebox pppd[6917]: Connect time 1268.1 minutes.
Tue May 17 08:11:14 firebox pppd[19579]: Connect time 0.5 minutes.
Tue May 17 09:07:32 firebox pppd[19874]: Connect time 53.9 minutes.
Tue May 17 09:08:36 firebox pppd[20580]: Connect time 0.4 minutes.
Tue May 17 10:00:18 firebox pppd[20744]: Connect time 51.5 minutes.
Tue May 17 13:24:00 firebox pppd[21460]: Connect time 202.3 minutes.
Tue May 17 13:27:30 firebox pppd[23658]: Connect time 2.2 minutes.
Tue May 17 13:31:02 firebox pppd[23871]: Connect time 2.6 minutes.
Tue May 17 13:46:45 firebox pppd[24055]: Connect time 15.2 minutes.
 
Wed May 18 09:14:51 firebox pppd[24733]: Connect time 1161.2 minutes.
 
Thu May 19 07:14:49 firebox pppd[4330]: Connect time 629.7 minutes.
Thu May 19 07:21:04 firebox pppd[17820]: Connect time 1.2 minutes.
Thu May 19 07:30:23 firebox pppd[18336]: Connect time 3.2 minutes.
Thu May 19 08:34:42 firebox pppd[18762]: Connect time 59.5 minutes.
Thu May 19 08:35:48 firebox pppd[19532]: Connect time 0.4 minutes.
 
Fri May 20 08:47:45 firebox pppd[6201]: Connect time 84.0 minutes.
 
Sat May 21 09:35:33 firebox pppd[13357]: Connect time 876.7 minutes.
 
Sun May 22: No drop.
 
Mon May 23 07:36:41 firebox pppd[22143]: Connect time 2760.7 minutes.
Mon May 23 07:37:51 firebox pppd[22143]: Connect time 1.1 minutes.
Mon May 23 11:34:18 firebox pppd[17408]: Connect time 231.5 minutes.
 
Tue May 24 07:24:47 firebox pppd[216]: Connect time 1.0 minutes.
------------------------------ 5660 data:
Wed 20050525: 9:50am til 10:30am, 6:30pm til 8:10pm
------------------------------ 5100b graphical data available:
Thu 20050526: 7:20am til 8:10am, 9:20am til 10:05am
Fri 20050527: 7:15am til 7:58:49am, 8:40 til 9:30am
Sat 20050528: 9:15am til 9:50am
Sun 20050529: 11:05am til 11:45am
Mon 20050530: 12:15pm til 12:50pm (Labor Day)
Tue 20050531: 7:35am til 8:25am, 9:10am til 9:15am, 10:00am til 10:50am
Wed 20050601: 9:30am til 10:15am
Thu 20050602: 7:20am til 7:55am (SINUSOIDAL graph), 9:30am til 10:00am
Fri 20050603: 7:50am til 8:20am, 9:30am til 10:10am. (All drops before this point occurred
in the 3.0/512 profile. All drops after this point are in the 1.5/384 profile)
Sat 20050604: ??? Unknown. Lost log data from 11:30am til 2pm Sunday.
(May not have dropped.)
Sun 20050605: Dropped at 11:06am. Not able to regain sync until 11:30am.
 Dropped PPPoE connections until 12:03pm. (This failure occurred while in the 1.5/384 prof  ile.)
Mon 20050606: Dropped at 8:10am. Bad signal until 9:40am. 
Line pair replaced after noon.
Tue 20050607: Dropped at 7:35am. Bad signal until 11:10am.
Wed 20050608: Dropped at 8:15am. Bad signal until 9:05am. 
Bad signal 9:20 til 10:00am.
Thu 20050609: Dropped at 9:00am. Ok signal. Strange. 
11:15 til 11:40 NO SYNC. 11:45 til 12:00pm poor signal.
Fri 20050610: Strange. No drop.
Sat 20050611: Strange.... no drop... but now I'm knocked down to 
786/384! Come on! Reset modem at 11:31pm to clean up the 
signal analysis.
Sun 20050612: No drop. Just a poor signal around noon.

As you should see, weekdays are pretty much the same schedule.
Weekends and holidays have a different schedule. Sometimes it doesn't occur at all on the weekend.

--justbits
]]> http://www.dslreports.com/forum/remark,1364516