Does anyone know how long it takes BT to adjust their BRAS d/s rate on 21CN? When I was on 20CN, I used to refer to kitz' delay time table for guidance about the time - in the order of days rather than hours - it takes for BT to catch up following a d/s sync rate change, but I don't know what the timing is supposed to be like now I am on 21CN.
Most recent numbers for line 4 below. Showing the new absolutely all-time high sync rate of 2902, never seen anything in the 29xx range before.
BT Test xDSL Status Check:Pass Standalone sub test passed successfully.Pass OK. Circuit In Sync
BRAS=2319kb/s FTR=2278kb/s MSR=2848kb/s ServOpt=1 I/L=A
A SERVICE OPTION CHANGE ORDER IS IN PROGRESS ON THIS LINE
Up Sync=426kb/s LoopLoss=41.9dB SNR=5.9dB ErrSec=0 HECErr=0 Cells=0
Down Sync=2902kb/s LoopLoss=65.1dB SNR=1.5dB ErrSec=0 HECErr=N/A Cells=0
The bras d/s rate of 2319 seems too low to me, it hasn't adjusted yet to the recent increase in d/s sync due to me going back to 3 dB d/s target SNRM at the end of the brief experiment of running on a supposed 6dB to see what difference that might make. (The 6dB experiment was unsuccessful. The modems just are not following the target and the actual SNRM doesn't in fact go up - it is low straight after a reboot, as far as I can see.)
The most recent quoted AA TX rate shown in the clueless log 2551626, which would mean that BTW is in control, not AA, one reason why the VoIP is possibly not going to work especially if you don't run at AA's suggested VoIP-friendly reduced rate of 95% (*). I suppose I will have to wait for BT to change their ideas on d/s rate and then they can report that to AA in turn. So, at the moment, I presume that a certain amount of traffic is crossing AA's network unnecessarily, only to get dropped by BT anyway.
(*) I use AA's phone service, but I couldn't get VoIP to work reliably, and nowadays can't get my Siemens Gigaset N300 VoIP box to work at all in any case, so I am using AA -> mobile phone inbound call redirection, which works brilliantly.