Do you have any SNRm graphs for this morning?
QLT difficult to recall, but wifey's was well away from comp, and DSLstats bad behaviour not helpful.
Not sure if I misunderstand our answer or if you misunderstood me.
What would be useful is if you could get a SNRm graph mapping whilst performing a Quiet Line Test. If you could get a before and after period in the same graph too that would be useful.
In fact it needn't be a QLT, even better may be to try a Ringback test.
Dial 17070... and I think its option 1
Whilst doing this if possible, get DSLstats to record every 10 seconds rather than the default 60 secs.
Configuration > Graphs > Sample every:
What I'm trying to check is if there is any variation in SNR margin whilst the phone is in use or when it rings.