My asterisk server is connected to PSTN line. When we call to my asterisk server some IVR plays and asked to dial number. Dialing tone plays as we dial in our phone keypad but it also plays echo of that dial tone after some time. Dial tone and echo of that dial tone makes confusion when we dial more numbers in phone keypad.
how can i remove echo ?
i have already tried this
echocancel = yes echocancelwhenbridged = yes
But no effect.