In reply to a post by kwikbreaks:

If yours is good with 63dB attenuation I fail to see how the magic number whatever it is relates to ADSL - it must be some voice only measure.

Unless it's relative. IOW "for a line with 63db attenuation it scores 70 out of 100". Unlikely though. "Your dog runs very quickly considering it's only got one leg and has been dead for a month"

In reply to a post by dicko1975:

For what it's worth, I've always considered our phone line to be very quiet on the voice side.

If you can find an someone that knows about it, the audio gain can be adjusted. I had this done last year to help with a quiet and not-very-good line, but it took a second engineer to tell the newer guy it was possible.

The engineer was referring to the AC/Longitudinal balance of the line, it measures the lines susceptibility to noise ingress etc.

Thanks zhevkov. So does that mean the higher the number, the less susceptible the line is to noise?