[asterisk-users] echo cancellation for sip phones

2008-11-20 Thread Pezhman Lali
Dear, the sip phones that registered, in to the asterisk 1.4.x have the echo in their callings to pstn. how this echo can be canceled? Best ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list

Re: [asterisk-users] echo cancellation for sip phones

2008-11-20 Thread Alan Lord
Pezhman Lali wrote: Dear, the sip phones that registered, in to the asterisk 1.4.x have the echo in their callings to pstn. how this echo can be canceled? H - you don't give much to go on... What is the connection to the PSTN (i.e. what kind of card, interface etc...) The echo is

Re: [asterisk-users] echo cancellation for sip phones

2008-11-20 Thread Pezhman Lali
any telephone cards on our servers(SER and Asterisk) , all of calls are come from or going out , on internet connections --- On Thu, 11/20/08, Alan Lord [EMAIL PROTECTED] wrote: From: Alan Lord [EMAIL PROTECTED] Subject: Re: [asterisk-users] echo cancellation for sip phones To: asterisk-users