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jack1212

join:2012-10-24
Los Angeles, CA

AT&T DSL connection drops intermittently

Hi,
I switched from 1.5MB DSL over to 3.0MB dsl and I have been getting intermittent problems since the switch. I put new filters and bought a new phone so its not that.

As per reading other threads here are the last 20 links of the
»192.168.1.254/xslt?PAGE=J45 page

2400; 2432; 2432; 2432; 2432; 2432; 2432; 2432;
2432; 2432; 2432; 2432; 2432; 2432; 1216; 2432;
2432; 2400; 2400; 2400; 2400; 2432; 2432; 2432;
2432; 2400; 2432; 2400; 2400; 2432; 2432; 2432;
2432; 2432; 2432; 2432; 2432; 2432; 2432; 2432;
2432; 2432; 2400; 2400; 2400; 2400; 2400; 2400;
2400; 2368; 2368; 2368; 2368; 2400; 2368; 2368;
2368; 2400; 2368; 2368; 2368; 2368; 2400; 2368;
2368; 2368; 2368; 2368; 2368; 2368; 2368; 2368;
2368; 2368; 2368; 2368; 2304; 2336; 2304; 2304;
2336; 2304; 2304; 2272; 2272; 2272; 2240; 2240;
2240; 2272; 2272; 2272; 2272; 2304; 2272; 2272;
2272; 2272; 2240; 2272; 2272; 2272; 2272; 2240;
2240; 2240; 2208; 2240; 2208; 2208; 2208; 2208;
2208; 2272; 2272; 2272; 2304; 2304; 2304; 2304;
2304; 2304; 2304; 2304; 2304; 2304; 2304; 2304;
2304; 2304; 2304; 2304; 2304; 2304; 2304; 2272;
2304; 2304; 2272; 2272; 2272; 2304; 2272; 2272;
2272; 2272; 2272; 2272; 2336; 2272; 2272; 2272;
2272; 2272; 2272; 2272; 2240; 2240; 2272; 2272;
2240; 2272; 2240; 2272; 2272; 2272; 2272; 2272; ];

% Downstream C-RATES1 max rate (kbps)
twld.ds_capped_rate = 3008;

% Test for significant impulse noise in last 7 days.
% Recommend Interleaved profile if non
=========================================

AND here is the detailed statistics page on mdc:

Collected for 3 days 6:10:25
ATM Since Reset Current 24-Hour Interval Current 15-Minute Interval Time Since
Last Event
Cell Header Errors: 53603 449 1 0:04:07
Loss of Cell Delineation: 0 0 0 0:00:00
DSL
Link Retrains: 12 0 0 7:35:04
DSL Training Errors: 0 0 0 0:00:00
Training Timeouts: 0 0 0 0:00:00
Loss of Framing Failures: 21 0 0 7:35:04
Loss of Signal Failures: 21 0 0 7:35:04
Loss of Power Failures: 0 0 0 0:00:00
Loss of Margin Failures: 648 0 0 7:35:04
Cumulative Seconds w/Errors: 13463 213 3 0:00:16
Cumulative Sec. w/Severe Errors: 914 22 0 1:38:46
Corrected Blocks: 0 0 0 0:00:00
Uncorrectable Blocks: 70025 1298 3 0:00:16
DSL Unavailable Seconds: 988 0 0 7:34:48
ISP Connection Establishment: 3 3 3 2 days 17:32:14



NormanS
I gave her time to steal my mind away
Premium,MVM
join:2001-02-14
San Jose, CA
kudos:11
Reviews:
·SONIC.NET
·Pacific Bell - SBC

Nothing you have posted tells me what may be the problem. What you need to post are the SNR, Line Attenuation, sync rates (down/up), and, if available, the estimated MaxRate (may be labeled as, "Max ATTN").
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum


jack1212

join:2012-10-24
Los Angeles, CA
reply to jack1212

Thanks for the quick response, Here you go:
=================================

DSL Down Up
Current Rate: 2208 kbs 480 kbs
Max Rate: 2432 kbs 504 kbs
Current Connection:
Current Noise Margin: 2.0 dB 7.0 dB
Current Attenuation: 48.4 dB 31.5 dB
Current Output Power: 16.9 dB 11.9 dB



NormanS
I gave her time to steal my mind away
Premium,MVM
join:2001-02-14
San Jose, CA
kudos:11
Reviews:
·SONIC.NET
·Pacific Bell - SBC

You have line trouble. Here is a rundown on what those numbers mean:

»AT&T Southeast Forum FAQ »How do I check modem stats & event logs? What do the numbers mean?

A downstream Attenuation of 48.4 dB should be comfortable for 3.0M service; but I would expect SNR to be ~13 with that attenuation. Your SNR is only 2.0 dB, which is why the connection is all wonky. I had 3008/512 sync with only 11.0 dB SNR (higher would be better) and 51.0 dB attenuation (lower would be better).

Do you have voice service on the line, or is it dry loop. With voice, if you have quality issues on the voice side, such as static, hum, crosstalk, or the like, getting that fixed can help tremendously. I saw my SNR drop below 3.0 dB with voice line problems.

Also, re-checking at the NID can help sort out if it is premises wiring (numbers will be improved), or plant wiring (numbers won't change).

»AT&T Southeast Forum FAQ »How to check modem stats, synch rates & speeds from test jack at the NID.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum