<p>If your sip provider supports gsm, then it is fine to send them your existing format, but I am sure by the time voice reaches an end user, it is transcoded at least once or twice again, so you can never guarantee what quality the end user is getting. I would stay with ulaw, as it has more chances to retain a better quailty even after a few transcodings, plus almost every sip provider will be able to receive it as it is and pass it on as received.<br>
</p>
<p>Zeeshan A Zakaria</p>
<p>--<br>
<a href="http://www.ilovetovoip.com">www.ilovetovoip.com</a></p>
<p><blockquote type="cite">On 2010-09-24 1:02 PM, "Gareth Blades" <<a href="mailto:list-asterisk@skycomuk.com">list-asterisk@skycomuk.com</a>> wrote:<br><br>The best format would be in whatever format asterisk is sending the<br>
final audio out in. Even if you store it in the highest quality asterisk<br>
may have to transcode it on the fly so its best to store it in an<br>
already transcoded format to reduce the cpu load.<br>
For dahdi you would want to use the native .sln format. For sip use<br>
whatever coded you use over the sip connection.<br>
<p><font color="#500050"><br>Danny Nicholas wrote:<br>> Greetings fellow listers,<br>> <br>> I have an ...</font></p>--<br>
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