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New Member

Cisco 877 DSL Line Noise

Greetings, we have recently installed an 877 which fails to sync with the DSL circuit, following debugging of the ATM interface the following error is noted.

000452: *Mar 1 01:51:15.919 GMT: DSL(ATM0): Open failed: Req. min. rate + noise margin + PSD not possible on the line - retrying

Whilst i appreciate this may be a problem with the DSL circuit a BT 2Wire Router connects without issue as per the attached image. I have also tried forcing the DSL operating mode to both ADSL2 and ADSL2+ without success.

Would i be correct in assuming that the line is too noisy for the 877 to sync upto? Could i also ask if anyone has experienced a similar issue in the past?

Regards

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: Cisco 877 DSL Line Noise

Can you try 3.0.33 firmware from ftp://ftp.cisco.com/pub/access/800

failing that you will need help from cisco TAC.

4 REPLIES
Hall of Fame Super Gold

Re: Cisco 877 DSL Line Noise

Can you try 3.0.33 firmware from ftp://ftp.cisco.com/pub/access/800

failing that you will need help from cisco TAC.

New Member

Re: Cisco 877 DSL Line Noise

Thank you for that, i wasnt able to find these files anywhere on cisco.com

Thank you, i shall let you know if it resolves the issue.

Regards

New Member

Re: Cisco 877 DSL Line Noise

All working now, thanks again for your help

Regards

Hall of Fame Super Gold

Re: Cisco 877 DSL Line Noise

Very good, thank you for the nice rating and good luck!

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