Is there not a different way to do that, ie: echocancel=31speech or echocancel=always combined with: echocan_taps=32 echocan_train=350 Is chan_ss7 using your VPMADT032 at all? How do you tell whether you are using s/w echo or the hardware module? jorge. > > > 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. > > > > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-ss7/attachments/20100330/4a5fa552/attachment.htm
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