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. It sounds like you may have found a case where the echo canceller has not been started. Like Daniel mentioned, there was a patch to enable it which he submitted. Can you confirm whether or not you are running on the latest version of libss7 and Asterisk? -- Matthew Fredrickson Software/Firmware Engineer Digium, Inc.