> Successfully got the adapters to allow the BT phones to ring > on lines coming out of a TDM.......... but now my latest > problem is echo. > Suggestions / Experiences in UK appreciated
Most of our clients with BT lines tend to have ISDN BRIs, but we do have one in Northampton running 3 analogue lines from a TDM400. zaptel.conf is as follows: fxsks = 1-3 loadzone = uk defaultzone = uk The TDM driver is loaded with opermode=UK and the output from dmesg confirms this. Relevant settings from zapata.conf are as follows: echocancel=yes echocancelwhenbridged=yes echotraining=800 rxgain=8.0 txgain=-4.0 busydetect=yes group = 1 context = inbound channel => 1-2 group = 2 context = inbound channel => 3 They're running Asterisk/Zaptel 1.0.10. There were major echo issues when we first deployed the system back in September, but some careful tweaking of rxgain and txgain seems to have largely resolved the situation. Certainly my experience has been that rxgain and txgain have far more impact on echo reduction than any of the echo-specific settings. Get the gains right first, then play with the echo-specific settings. Regards, Chris -- C.M. Bagnall, Director, Minotaur I.T. Limited This email is made from 100% recycled electrons _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
