Hi, just wondering if anyone can shed any light on the following.
I upgraded from ADSL+ to Infinity 2 early February and was one of the first to be
connected in the new cabinet.
Initially I had a max attainable speed of 84Mbps down at 6db SNRM and a throughput speed test of 73Mbps.
About 2 weeks after installation the SNRM of 6db only gave max attain of 81Mbps
which has been dropping ever since and is now at 69Mbps after another drop today.
The strange thing is that the last twice I have been monitoring it and the drop in
SNRM has been instant and about 1.2db in each case not the gradual up and
down you get with day to night and back to day. First time was at Monday at 9am,
second time was today at 4:30pm.
Its as if the DSLAM is reducing its TX power, anyone know if this happens, maybe
to reduce crosstalk as more lines are connected.
No re-sync occurs when this drop happens but the margin to operate is reduced
and a re-sync is sure to occur as it gets worse and closer to the present operating speed.
I have done all the usual quite line tests, BT speed test, restart of equipment etc
but nothing appears to stop these big instant jumps in SNRM
At the current rate I will be down to infinity 1 rates within a couple of months !
P.S. I am approx. 500m from the cabinet and the wholesale checker says I should
be getting between 55 and 65 Mbps so at present I am within the given value, just.