Can meaning be gotten from router's "SNR margin" figure?
I just upgraded my Qwest DSL service from 1.5Mb to 7Mb, although it turns out that my Actiontec GT701 only trains to 6144/896.
The router's reported "SNR margin" dropped from 31/xx (I think the xx [upload] was around 20-25, but I've already forgotten) to 9/12 which seems disturbingly close to zero.
When I had 640K service I had SNR values in the 40db range, but the drop to 30db was dismissed as being due to the way DMT circuits behave compared to the old CAP technology.
The switch only happened this morning, so I won't be able to exercise the line 'til I get home this afternoon, but I wonder how well I should expect it to work with this reading.
Other than error counters, the only other numbers the Actiontec shows are Transmit power (18/12) and Attenuation (50/54). I have no idea what the significance of these might be.
read more and respond »Posted 5 years ago by Bert Hyman in Digital Subscriber Line
