Hi all,
Looking for any pointers to help a client who has been using business BBV for a couple of months.
The initial setup with a 220V modem/router was disastrous with very bad echo much of the time, frequent dropouts, service often locking up and requiring a reboot, and similar problems. In conversation with BT Customer Support this was diagnosed as a software incompatibility problem, as the 220V was running version 3.01 firmware.
Since then I've gone through both 220V and 2500V routers running different minor variants of 3.03 and 3.30m firmware. At present they're on a 2500V with the 3.30r revision, which I understand to be the latest firmware for that router.
They are still reporting that calls are plagued with frequent dropouts and sometimes echo, and that calls to valid numbers sometimes fail (N.U. tone). I've verified this myself while testing the system.
The DSL connection is rock steady, with the premises only a couple of hundred yards from the exchange: 8Mbps downstream with >16db noise margin, 448kbps upstream with >20dB margin. BER tests run for extended periods give consistently zero errors.
So are we just looking at congestion problems over the internet? I was under the impression that BT applied prioritization to VoIP packets for its own BBV service, but maybe I'm mistaken. As a matter of interest, does anyone know where the servers for a business BBV service would be located for a business served out of Stalham exchange in Norfolk? At the system X main in North Walsham?
They're now at the point of saying that if we can't sort this out very soon they'd rather abandon the service and return to paying more for calls, and maybe have me convert an existing PSTN line to ISDN2e to get an extra line.
