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Links: ·Verizon FAQ ·Freezes? ·Verizon DSL Help ·WinXP PPPoE ·Alternate Verizon Setup(BA)
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rg551

join:2012-02-04
Joshua Tree, CA

[connectivity] frequent disconnects (started 3 months ago)

Starting 3 months ago we began to experience frequent disconnects/loss of signal. We've had 3 technicians come out, they've replaced outside wiring, moved us to a less crowded dslam and ran other various tests. However the issue is still here and we still randomly disconnect 4-6 times a day (sometimes more). Verizon also installed a 2nd phone jack for us a few months ago so our router has its own and our phone goes into the other one (they use filters). When we start to disconnect our snr drops from 7~9 to 3~5 then we lose our signal, the dsl light begins to flash and the internet light disappears. Here is a screenshot of our transtats recently.. this is an actiontech gt704-wg-b btw (2 months old)

before we were moved to new dslam (normally)

dsl negotiated mode: adsl2+
speed (down/up): 16587 / 839 kbps
atm qos class: UBR
output power (down/up): 12.3 / 21.0 dBm
attainable rate (down/up): 17932 / 907 kbps
HEC errors (down/up): 43 / 0
OCD errors (down/up): 0 / 0
LCD errors (down/up): 0 / 0
SNR margin (down/up): 7.1 / 9.9 dB
attenuation (down/up): 16.5 / 5.6 dB

before we were moved (about to drop)

speed (down/up): 17647 / 1059 kbps
atm qos class: UBR
output power (down/up): 12.3 / 21.0 dBm
attainable rate (down/up): 21336 / 1121 kbps
HEC errors (down/up): 1090 / 2727
OCD errors (down/up): 138 / 0
LCD errors (down/up): 2 / 0
SNR margin (down/up): 3.9 / 9.9 dB
attenuation (down/up): 16.0 / 5.2 dB

how it looks normally (after last tech came out.. he said he moved us to a new dslam)

speed (down/up): 17628 / 1136 kbps
atm qos class: UBR
output power (down/up): 10.1 / 0.0 dBm
attainable rate (down/up): 23872 / 1156 kbps
HEC errors (down/up): 241 / 4294966186 (yes.. it says that)
OCD errors (down/up): 80 / 0
LCD errors (down/up): 0 / 0
SNR margin (down/up): 6.4 / 11.1 dB
attenuation (down/up): 13.5 / 6.0 dB

this is how it looks as its about to drop (after we were moved)

speed (down/up): 17647 / 1024 kbps
atm qos class: UBR
output power (down/up): 12.3 / 21.0 dBm
attainable rate (down/up): 20464 / 1084 kbps
HEC errors (down/up): 94 / 91
OCD errors (down/up): 11 / 0
LCD errors (down/up): 0 / 0
SNR margin (down/up): 4.1 / 9.8 dB
attenuation (down/up): 16.0 / 5.3 dB

any idea what could be causing this? and could the hec/ocd errors be relevent to the disconnects? the technicians that come out don't know what they are

rg551

join:2012-02-04
Joshua Tree, CA

forgot to mention this..
(GMT-08:00)01:32:54 Sat Feb 04 2012 user info syslog: Error: ipq died.
(GMT-08:00)01:32:54 Sat Feb 04 2012 user info syslog: cleanup()
(GMT-08:00)01:32:54 Sat Feb 04 2012 user info syslog: ipq setup()

appears every time it disconnects in the system log.


norbert26

join:2010-08-10
Warwick, RI

reply to rg551
In all the samples you gave the download noise margin is too low and you are having sync issues as a result. In the past i have experienced stability issues with the action tech gt-704 . If possible test with a different modem to see if this improves (maybe borrow one). If not maybe another truck roll (however you have had 3 already) OR drop speed to lower tier if that line can not be improved.


rg551

join:2012-02-04
Joshua Tree, CA

thank you for the response.

the other modems won't connect to the internet for some reason.. they worked at my last place, only the actiontec connects here and i've tried the others, no luck (verizon made us switch to their actiontec router or they wouldn't help with our issues over a year ago) and normally at 5.9+ snr it stays connected, it's just the moment it dips a little its gone. they tried lowering our speeds (connected at 10-12k for a week) and it didn't help.. heres the stats when it was lowered

speed (down/up): 11,759 / 1020 kbps
atm qos class: UBR
output power (down/up): 12.1 / 19.4 dBm
attainable rate (down/up): 19660 / 1081 kbps
HEC errors (down/up): 0 / 0
OCD errors (down/up): 0 / 0
LCD errors (down/up): 0 / 0
SNR margin (down/up): 14.4 / 9.8 dB
attenuation (down/up): 16.0 / 5.2 dB

i tried to save as many screens as possible since they said it'd help the technicians, go figure they didn't want to look at it when i mentioned it :/ and another odd thing was when it had really good snr (10+) at the lower speed it didn't slowly drop in snr like it does now, it just disconnects


norbert26

join:2010-08-10
Warwick, RI

1 edit

reply to rg551
Since your last place when you moved did you change your account password ? The account password is also used for configuring the PPP Profile. If you changed the account password you need to go into the modem and enter the new password for the PPP log in. Also the PPP user name. Have you changed the user name on the account ? These need to be entered or changed correctly on the old modems or they won't connect . You will get sync but no internet light if the PPP user name or password are wrong.
Please note that the PPP user / password are DIFFERENT then the user / password you use to enter the modem/router (normally by typing »192.168.1.1) into a browser . to enter the modem the user is something like ADMIN and password is password01 or something like that by default. The PPP user / password are edited under PPP settings once you have modem access.
EDITED: to try and clarify better.


rg551

join:2012-02-04
Joshua Tree, CA

3 edits

i've never used pppoe that i can remember, its always been dhcp and when i moved i had to change isps completely. i had at&t when i lived in LA, now i live in joshua tree and verizon is the only isp in the area.

edit: what does output power (down/up): 10.1 / 0 dbm mean? even after restarting my router the upload stays at 0.. and this just appeared in the system log (this appeared on its on - connection died then this appeared when i checked the log)

(GMT-05:00)00:01:48 Sat Jan 01 2000 daemon err user: No client certificate found
(GMT-05:00)00:01:49 Sat Jan 01 2000 user info syslog: ipq setup()
(GMT-05:00)00:01:50 Sat Jan 01 2000 daemon err user: tr69c: Unable to retrieve attributes in scratch PAD
(GMT-05:00)00:01:50 Sat Jan 01 2000 daemon err user: Stored Parameter Attribute data is corrupt or missing
(GMT-05:00)17:29:12 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:29:14 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:29:14 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:29:15 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:32:45 Sat Feb 04 2012 daemon err user: ACS Disconnect with error 1
(GMT-05:00)17:32:45 Sat Feb 04 2012 daemon err user: ACS Connect Status = 2 Connection to host cpe-ems5.verizon.com(206.46.234.146):443 failed 145 (Connection timed out)


norbert26

join:2010-08-10
Warwick, RI

said by rg551:

i've never used pppoe that i can remember, its always been dhcp and when i moved i had to change isps completely. i had at&t when i lived in LA, now i live in joshua tree and verizon is the only isp in the area.

edit: what does output power (down/up): 10.1 / 0 dbm mean? even after restarting my router the upload stays at 0.. and this just appeared in the system log (this appeared on its on - connection died then this appeared when i checked the log)

(GMT-05:00)00:01:48 Sat Jan 01 2000 daemon err user: No client certificate found
(GMT-05:00)00:01:49 Sat Jan 01 2000 user info syslog: ipq setup()
(GMT-05:00)00:01:50 Sat Jan 01 2000 daemon err user: tr69c: Unable to retrieve attributes in scratch PAD
(GMT-05:00)00:01:50 Sat Jan 01 2000 daemon err user: Stored Parameter Attribute data is corrupt or missing
(GMT-05:00)17:29:12 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:29:14 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:29:14 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:29:15 Sat Feb 04 2012 daemon err user: tr69c: Unable to read tr69c acs state data from scratch pad
(GMT-05:00)17:32:45 Sat Feb 04 2012 daemon err user: ACS Disconnect with error 1
(GMT-05:00)17:32:45 Sat Feb 04 2012 daemon err user: ACS Connect Status = 2 Connection to host cpe-ems5.verizon.com(206.46.234.146):443 failed 145 (Connection timed out)

That reading that showed 0 DB on transmit power on upload was a glitch reading where the modem did not sync correctly at all. In some markets Verizon uses PPP . The best i can suggest here is see if Verizon will send another modem you can try if that does not pan try another truck roll .


Smith6612
Premium,MVM
join:2008-02-01
North Tonawanda, NY
kudos:21
Reviews:
·Frontier Communi..
·Verizon Online DSL

reply to rg551
The ActionTec I would imagine would be fine with the higher speed, but if it truly is the problem with the sudden bombing in sync, Verizon also supports the Westell 6100 and the 7500 on the 10-15Mbps speeds. What model number is your old modem? If it's older than a 6100 it might not be able to sync due to the ADSL2+ DSLAM, as unlikely as it may sound.

I do notice your sync speed is changing with each stats update you've posted. It does sound like there is some other noise on the line that is affecting it, perhaps with crosstalk from other cable pairs or interference from perhaps electrical lines. There's some modes ADSL2+ supports that lower speed without dropping sync, but hardly any ISP seems to take advantage of that function. I would think Verizon would find such a mode useful if the DSLAMs supported it. There's a lot of modems out there that support it. The sags in SNR that lead to a final drop seem to be due to a combination of Bit Swapping and noise acting in unison. Higher frequencies on the lines become unusable for a short amount of time, bits are swapped into other carriers, and as carriers are marked as "unusable" they are not re-used often times.

Be really nice if we could use a tool like DMT to see how the lines operate.


rg551

join:2012-02-04
Joshua Tree, CA

1 edit

My other modem is a Westell LiteLine 6100 and I tried downloading the DMT tool to try and monitor my line (just now), but it keeps saying it doesn't support my router. By interference from electrical lines you're talking about impulse noise? I mentioned that to the last technician who came out (assuming the problem isn't just something they refuse to replace) but he claimed they had no way of testing for it and said it's very unlikely and didn't say another word about it.

@northerb, thanks for explaining that


rg551

join:2012-02-04
Joshua Tree, CA

update: another tech came out, said he tested our phone line from the pole and it appears there is a short circuit (ohm reading indicated two bare wires touching?..) and said its coming from something plugged into the phone jack our phones go into.

so.. we unplugged one cable, he tested it again.. said the short was gone and said to remove that cable (and that we should replace all the wires for those devices). shortly after he left to test it, i checked what it was plugged into.. the wire didn't plug into a device. its been a day since he came out and we replaced all the wires going into that phone jack.

he also said he'd have the programming department change our connection from adsl2+ to adsl2, claiming we don't need adsl2+ since we're half a mile from the central office and adsl2 handles those types of interference better. now, i'm not trying to say he doesn't know what he's talking about as i know very little about what causes dsl signal interruptions, but i think it sounds fishy that our 'other' phone jack, the one the router doesn't plug into has a device or wire causing all this (or so he says).

our connection is still adsl2+ and the connection drop outs are still happening and.. after speaking with almost everyone that lives on my block they claim to have no issues with their dsl and they never experience drop outs while accessing the web or gaming online.

should i just give up on this or keep calling about it? i don't see how after 3 months they just 'notice' a short out of the blue like that.. it feels made up.


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