[c-nsp] 827 noise margin

Dan Letkeman danletkeman at gmail.com
Fri May 15 11:03:36 EDT 2009


I have an 827 router that seems to have noise issue's after a while
and i'm wondering if it is the device or the line? The noise margin
drops down after a week or two of use. If I restart the router the
noise margin is back up to about 7 dB.

This is what is looks like after a week or two:

Modem Status: Showtime (DMTDSL_SHOWTIME)
DSL Mode: ITU G.992.1 (G.DMT)
ITU STD NUM: 0x01 0x01
Vendor ID: 'ALCB' 'ANDV'
Vendor Specific: 0x0000 0x0000
Vendor Country: 0x00 0x00
Capacity Used: 96% 104%
Noise Margin: -41.5 dB 11.0 dB
Output Power: 20.0 dBm 12.0 dBm
Attenuation: 32.5 dB 18.0 dB
Defect Status: LOM None
Last Fail Code: Protocol error
Selftest Result: 0x49
Subfunction: 0x02
Interrupts: 661 (1 spurious)
Activations: 2
SW Version: 3.8129
FW Version: 0x1A0


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