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Attenuation Increase

A few days ago the broadband failed with "ADSL Link Down"; once it was back a few hours later the resync and speed was all over the place for 12 hours and then it settled down. However, there has been an increase in attenuation and a reduction in downstream power. The router statistics are below for "before" and "after". I would be grateful for any insight into the possible reasons. Suffice to say, all hardware, wiring, configuration etc. is unchanged. Many thanks.

Before the fault:
Downstream Attenuation: 50.0 dB Downstream Power: 19.6 dBm
Upstream Attenuation: 25.0 dB Upstream Power: 12.5 dBm

After the fault:
Downstream Attenuation: 54.0 dB Downstream Power: 0.0 dBm
Upstream Attenuation: 25.1 dB Upstream Power: 10.6 dBm

Thank you.
 
Hmm I would of thought, given that you appear to live quite far from your exchange, that the router would be reporting at least some Downstream Power and not merely 0.0 dBm, especially since it had 19.6 before the fault.

The figure 'before' suggests that something somewhere has changed and an incompatibility between the DSLAM and your router could be resulting in a bad report. Any BT Openreach maintenance at your local exchange could be part of the reason?

Essentially, if your router is showing 0.0dBm downstream power and your connection is still working then I'd put it down to a router calculation error or DSLAM communication issue as mentioned above. However a figure of 0.0 dBm is actually possible so..
 
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