Re: [Serusers] Re: Echo Cancellation

Just because you're sending both calls through the same gateway doesn't mean that your providers upstream gateways don't change depending on the destination. Your provider could have tens or hundreds of different vendors depending on where they terminate calls.

Check the ECAN (echo cancellation), VAD (variable audio detection), etc settings on your ATA or IP phone. Play with the gains (turing down the tx gain on the microphone can help). Try changing codecs. Buy a book on how PSTN audio works or speech codecs, do some google searches, there's LOTS of info out there.

-Evan

ravi reddy wrote:

Thanks for your reply

       Here both local calls and international calls are passing

through same gateway but why iam hearing echo only for international calls

           can you have any idea please suggest me

         Thank You

Regards, Ravi

On 7/10/06, ravi reddy mravikreddy@gmail.com wrote:

...

Hi users

      I noticed some strange thing yesterday when i made a SIP-SIP

call everytthing was O.K , when I made SIP-Pstn local call its pretty good BUT When I made SIP-PSTN (international) I am Hearing my Voice back at Some stages , I tried for lot of calls but i dont understand where actually the problem is creating ,

               Can any body please solve this "ECHO" problem

Thanks.

Regards, Ravi.

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