Thanks Chris & Roberto for the feedback.
Firstly, to reply about the ADSL Max (20CN I had before) this before the change I had measured speed mostly ranging over recent times from 2.4Mbps to 2.9Mbps
Now here is more wonders of the 21CN and the MSAN behaviour:-
At just about midnight I see that the PPP session reset and I now have the following stats:-
Channel: FAST, Upstream rate = 443 Kbps, Downstream rate = 3179 Kbps
Link Power State: L0
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
SNR (dB): 6.4 17.9
Attn(dB): 54.0 28.7
Pwr(dBm): 0.0 13.1
Max(Kbps): 4196 828
Rate (Kbps): 3179 443
Now I have done nothing to the Router i.e. it is still set at ADSL2+ but note the increased sync speed, reduced Margin & Attenuation and dah da! back on ADSL2
So still a complete mystery as to why the MSAN decided to go "ADSL2+"........................do you think I should set the Router to ADSL2 to mitigate for the mismatch being a possible/likely cause for what I have experienced???
Looks like MSAN is doing what it says on the tin, here is the current speed:-
Just off to see what BT says my IP is
Result is IP of 2.8Mbps whic tallies with the 3179 sync i.e. 88.2% of that figure.
Hmmm! so could the cause of the long interval drops from "post the Training Period" be down to the Router set to ADSL2+ somehow conflicting with the MSAN 'settling' on ADSL2 as was and is now again???
Oh, at least 21CN is doing what was promised i.e. reflecting the changes rapidly compared to groaningly slow 20CN DSLAM changes taking 10's of hours to increase and "instantly" dropping in comparison!
Edited by Routefinder (Tue 24-Apr-12 01:57:31)