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Any DSL Troubleshooting Advice?

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Any DSL Troubleshooting Advice?

I'm trying to help an AT&T user who has a 768 KB upstream DSL service. The user finds that their connection frequently drops (falls to 0 kbps and then comes back up to 600+ KB). Their DSL modem does report a line attenuation of 56 DB and a Signal-to-Noise Ratio of 22. After about an hour of usage, there were 270 CRC Errors.

 

We've tried the following (with no success):

 

-unplugging all telephones and dsl filters so that only the dsl modem was plugged in
-we swapped the dsl modem for a different known working dsl modem and the problem persisted
-we tried a different cable from the dsl modem to the wall

 

Any other ideas about things that might be the problem?

 

Thanks.

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Re: Any DSL Troubleshooting Advice?


confusedDslUser wrote:

I'm trying to help an AT&T user who has a 768 KB upstream DSL service. The user finds that their connection frequently drops (falls to 0 kbps and then comes back up to 600+ KB). Their DSL modem does report a line attenuation of 56 DB and a Signal-to-Noise Ratio of 22. After about an hour of usage, there were 270 CRC Errors.

 

We've tried the following (with no success):

 

-unplugging all telephones and dsl filters so that only the dsl modem was plugged in
-we swapped the dsl modem for a different known working dsl modem and the problem persisted
-we tried a different cable from the dsl modem to the wall

 

Any other ideas about things that might be the problem?

 

Thanks.


 

I assume you meant 768K(bits) upstream and not 768KB (bytes). That should equate to the 6Mbps/768Kbps service.

 

What model modem?

 

What are the indicator lights on the modem doing during these episodes?

 

Have you tried a "factory" reset on the modem?

 

Have you tried connecting the modem directly at the NID?

 

 

 

 

 

 




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