Mobile operators operates own echocancellers on every channel, but not landlines. I operate chan_ss7 witch SANGOMA cards with HW echocanceller - and it helps on landlines. On Friday 11 April 2008 06:55, Christopher Bautista wrote: > Hi guys > > Update: > > PSTN -> Asterisk -> SIP extensions > > landline to sip extension ..... > noticeable echo mobile to sip extension > ..... no echo > > > PSTN -> Asterisk -> PSTN ..... no > > echo SIP -> Asterisk -> SIP > > ..... no echo > > > > SIP -> Asterisk -> PSTN .... no > > echo > > I hope someone can help me. > > Thanks > > Chris
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