Hi! > The network setup is : > analogue+GXW / softphone --> Linksys WAG160N --> Asterisk server --> ITSP > --> other networks
Do it step-by-step: Take the Asterisk server out of the equation, i.e. call the destination directly with your softphone or the Grandstream ATA and see if that removes the echo. That fact that both sides are hearing echo is a bit unusual - especially when calling a mobile destination things should be different. Check twice that the analog devices in the setup are ok, and replace them for a test if you can. You could also test with a destination that is run by a different operator (or is located in a different country). Another test: Use the Echo() application on Asterisk and call it from both sides. Also: You could capture the traffic and look at it with Wireshark, the delay/latency in particular. Philipp P.S.: I do think a jitter buffer matters for echo, simply because it introduces an additional delay. However the Asterisk server should not use its jitter buffer because jbforce is set to no and the Asterisk server is not the final endpoint (it only sits in between). -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users