eli2k
join:2002-12-06
Garden Grove, CA | [Line Problem] DSL connectivity and speed fluctuations This problem occurred about one hour after 2012 started, haha.
Speed should be 3000/512. Recently the modem has been losing its connection, and then tries to reestablish the connection. Sometimes it works, but the downlink is slow, 640, and right now it has that weird value below. During the day today it was fine, back up at 3000. Diagnostics seem okay (I think). On the stats page, ATM Cell Headers was in the tens of thousands before the modem reboot, do not recall the other values. I switched the power supply to this modem once, and again today, but still same problem. Modem model is 2701HG-B. Should I wait it out, or contact ATT to see if they can fix the problem? Thanks for any help or insight!
Below are stuff from the modem:
Connection Speed:
• Incoming: 2240 kbps
• Outgoing: 512 kbps DSL Connection Details
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT Annex A
Downstream Rate: 2240 kbps
Upstream Rate: 512 kbps
Channel: Fast
Current Noise Margin: 6.0 dB (Downstream) 17.0 dB (Upstream)
Current Attenuation: 46.3 dB (Downstream) 31.5 dB (Upstream)
Current Output Power: 17.4 dBm (Downstream) 7.9 dBm (Upstream)
DSLAM Vendor Information: Country: {0x0F} Vendor: {ALCB} Specific: {0x00}
PVC Info: 0/35 |
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 d_lBarsoomPremium,MVM
join:2002-12-08
Reno, NV
kudos:7 | Maybe more accumulated stats might help suggest a cause of this problem. Changes in the problem over time, if any, can help as well.
If it doesn't improve and no obvious causes appear, then your trouble thread in AT&T Direct would be the best bet for a cure.
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TCE Weather |
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eli2k
join:2002-12-06
Garden Grove, CA | The problem with more stats is that it seems to reset itself all the time. But I guess overnight it was able to collect for a period of time and has not reset again. Here is an update this morning:
DSL Connection Details
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT Annex A
Downstream Rate: 960 kbps
Upstream Rate: 512 kbps
Channel: Fast
Current Noise Margin: 6.0 dB (Downstream) 16.0 dB (Upstream)
Current Attenuation: 52.1 dB (Downstream) 31.5 dB (Upstream)
Current Output Power: 16.0 dBm (Downstream) 11.9 dBm (Upstream)
DSLAM Vendor Information: Country: {0x0F} Vendor: {ALCB} Specific: {0x00}
PVC Info: 0/35 |
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eli2k
join:2002-12-06
Garden Grove, CA | reply to eli2k
Another update, at 1230pm PST:
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT Annex A
Downstream Rate: 2656 kbps
Upstream Rate: 512 kbps
Channel: Fast
Current Noise Margin: 0.0 dB (Downstream) 20.0 dB (Upstream)
Current Attenuation: 46.2 dB (Downstream) 31.0 dB (Upstream)
Current Output Power: 17.5 dBm (Downstream) 11.9 dBm (Upstream)
DSLAM Vendor Information: Country: {0x0F} Vendor: {ALCB} Specific: {0x00}
PVC Info: 0/35 |
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d_lBarsoomPremium,MVM
join:2002-12-08
Reno, NV
kudos:7 | reply to eli2k
Okay, some diagnostic data. Notice how your download attenuation changed sharply on that second data set!
Attenuation shouldn't change more that 0.5 dB from one re-sync to the next. This change in attenuation levels will cause your sync drops.
The problem is probably something on your line. Maybe a bad splice crossing with another line or a short to ground? It might be due to your in house wiring if something changed on that recently.
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TCE Weather |
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eli2k
join:2002-12-06
Garden Grove, CA
1 edit | Thanks for the help! Nothing has been done at all recently, unless the manager did something outside. The only thing that changed in the house itself was an electric toothbrush but that's located in the bathroom and far away from anything else. I guess I'll give ATT a call in a few days. Too busy right now, haha.
A little update at 2300.
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT Annex A
Downstream Rate: 2432 kbps
Upstream Rate: 512 kbps
Channel: Fast
Current Noise Margin: 9.0 dB (Downstream) 20.0 dB (Upstream)
Current Attenuation: 45.1 dB (Downstream) 31.0 dB (Upstream)
Current Output Power: 17.5 dBm (Downstream) 11.9 dBm (Upstream)
DSLAM Vendor Information: Country: {0x0F} Vendor: {ALCB} Specific: {0x00}
PVC Info: 0/35 |
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eli2k
join:2002-12-06
Garden Grove, CA | reply to eli2k
I plugged a corded phone into the phone port with everything else disconnected and there is a ton of noise/hissing/cracking. |
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d_lBarsoomPremium,MVM
join:2002-12-08
Reno, NV
kudos:7 | reply to eli2k
In that case the right way to get your DSL fixed is to first get the POTS fixed to eliminate the noise. That means calling the POTS repair number and reporting that you have noise on your phone line.
In most cases like yours, a repair of the POTS fixes the DSL problems.
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TCE Weather |
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