dutch55
join:2001-09-28
San Jose, CA
| reply to dslx_gm
Re: [Line Problem] Erratic DSL Performance and Intermittent Nois
All of the suggestions are very much appreciated.
I am running DSLReports line monitors and smokeping tests. Although DSL performance has been fine for the past couple of hours when I have occasionally listened to the voice line durning this past two hours, I hear static about half the time I pick the phone up.
According to the line monitor test it measured 100% packet loss at 20:33 EST and 21:43 EST, although it showed zero packet loss between those times. Earlier today between 13:23 and 14:13 10 of the 12 samples showed 100% packet loss, and the other 2 in this period showed 90% packet loss. Latency was also erratic. In total there were about 70 samples showing 100% packet loss out of 2583 samples between 4:03 EST and 2:03 EST 8/27.
at 2:53 EST I ran pings from a desktop PC in my house through my home router to IP 66.245.248.1 (DSLX gateway) and I saw unusually high latency. Most of the 50 pings are > 90 ms. Normally this is 10 ms. I was running pings to my router at the same time and it shows 0 ms.
I made no changes to my wiring today (which would have showed up in the line monitor test while wiring was disconnected) but yesterday I did losen and retighten the DSL side of the DSL splitter in the NID as well as the CAT5 pair going to my home patch panel. I also re-punched the other end of that pair at the Leviton DSL splitter (wired in series) in the home run box. My previous experimentation showed no difference in DSL performance or analog static with and without the Leviton splitter. I also checked the in-house wiring jacks at the two locations where there are analog devices on the analog line. A simple telephone tester showed polarity reversed which I corrected, although I saw no change in the static as a result of this.
On 10/27 I plan to check the analog side of the splitter in the NID as you suggested, and chase possible shorts in other inside jacks. I do not have another splitter. If I cannot find a place to purchase one Wednesday I can remove it and test with just the inside Leviton splitter. I have also purchased a used current model AT&T 2Wire gateway which should arrive in a couple of days.
As I said previously, several times I have disconnected the RJ11 input data line from the DSL modem and the analog noise stopped. While I haven't done it enough to completely rule out it being a cooincidence, but it is perplexing.
Thanks for listening. |
|
dutch55
join:2001-09-28
San Jose, CA
| Testing and changes made 8/27/08:
Unless I am missing something, at least part of my troubles are caused by other than any of my internal wiring or by the DSL Modem.
Between 2:30P and 3P PDT I disconnected everything inside the house and hooked up a phone to the RJLL from the telco side of the NID to listen for static. I unplugged the RJ11 from the AT&T side of the NID and connected a phone with a DSL filter directly to the analog/DSL line. With the house analog wiring and DSL wire disconnected from the circuit I was able to hear the same kind of crackle hiss static I observed in the house, but because of other outside noises it is difficult to tell if the volume of the static was the same as in the house.
I then trimmed the wires for the analog POTS wiring to the house and reconnected them to the analog side of the splitter at the NID.
I replaced the DSL twisted pair which was in the same CAT5 cable with the two analog lines with a twisted pair in a separate CAT5 cable with the other three pairs left unconnected.
After making the changes analog static seemed greatly reduced based on occasional use, howeverat about 12:30a PDT (3:30a EST) on 8/28, I heard the same kind of static reported previously.
I ran occasional pings to the first hop DSLX router from mid-afternoon on. Several 50 ping samples showed 10ms, but other tests with 50 pings showed almost all 50 with latency around 100 ms.
In addition to continuing to run DSL Reports line monitoring and smokeping, I ran a line quality ping test. Here is the URL:
»/linequality/nil/2424624
Line monitoring results are here:
»64.81.79.40/r3/cricket/grapher?t···ange=d:w |
|
dslx_gm
Premium,VIP
join:2002-12-26
Winnetka, CA
| dutch55 -
Can you please send me a PM with your DSL Extreme account information. I would like to take a look at your line readings from this end. Though you sound very versed in changing cables, if the problem persists, we may want to dispatch a phone company technician to you location to test the line all the way to the jack.
Is it possible to try to wire the NID splitter to another phone jack in the location to see if that corrects the issue. I assume that all of the wires terminate at the NID and are not daisy chained from one jack to another.
Thanks
--
George
General Manager
DSL Extreme
Will work for reviews.  |
|
