> here is a little explanation: > > End user (You) ---------> Your Telco ----------> Carrier 1 -----------> > Carrier 2 ------------ Carrier 3 -----------> Carrier 4(PTT) > --------------- > Far End User > > So basically, the Echo cancelling work backwards usually cancellation > for you would be done by Carrier 4, 3, 2, 1, or your Telco in that order > and echo for the Far End User would be done by Your Telco, Carrier 1, 2, > 3, or 4 in that order. > > Why in that order? >
AFAIK, the order is exactly the opposite, and if the user is experiencing echo on the sip phone, its most likely that the other end is the source of echo, which should be cancelled by the telco because its is nearer to the source of echo than the sip phone gateway. _______________________________________________ --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
