problem of echo

[begginer]

Hello,
I'm doing test of conference in vicidialnow but I have problem of echo (using both of SJphone and X-Lite) What's the problem and how can I resolve it ???

Thanks

[pylinuxian]

zip trunks or sip trunks ?

[begginer]

sip trunk

[pylinuxian]

Let me guess, you are making a test call to a PSTN line ?
Well, you sould know that PSTN have problems with echo, so make your test with real long distance call ... long distance calls don't have echo because telcos do echo cancelation , also try to call a GSM phone you will note that there is no echo anymore because gsm line have echo canceling. if you still have echo then check your voip provider.
ps : for more indepth solutions about echo problems you should visit asterisk forum.
ps2 : http://www.voip-info.org/wiki/view/Gran ... o+Problems
ps 3 : http://www.mail-archive.com/asterisk@uc ... 05306.html

[begginer]

thank you very much for your response, it will certainly help me

[pylinuxian]

so what's up ?
please provide feedback to help other like others have helped you.