Hello I have the following setup: Ast1.6.1.18+Chan-SS7 1.3 --> TE221 Board + VPMADT032 hw echo canceller --> E1 to Mobile MSC E/// AXE10 I assume the hardware module is detected as the following message appears: wcte12xp: VPM present and operational (Firmware version 117) Calls are initiated via a SIP Client with G729, codec available on the server. On most of the calls, the quality is crystal clear - however, on some specific numbers, there is a huge echo perceived on the SIP client. This happens to some specific numbers, though 99%+ of the calls are ok - all these numbers (with or without echo) are served by the same E1, so nothing changes on my side. I am connected to a mobile GSM operator, when I call this number from one of their cellphones, there is no echo... Any suggestions as what to check ? Many thanks, J. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-ss7/attachments/20100330/896cfcb9/attachment.htm
|