<br><div class="gmail_quote">On Tue, Jun 23, 2009 at 5:40 PM, Ron <span dir="ltr"><<a href="mailto:nhadie@gmail.com">nhadie@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im"><br>
>> I have a portal where a user can upload their own MP3, but when a user<br>
>> is using a g729 codec, the music on hold has a crackly sound. using g711<br>
>> it's very clear.<br>
><br>
> That could be for any number of reasons, including a overly lossy mp3<br>
> to begin with.<br>
<br>
</div>the mp3 moh is very clear when i use g711, only on g729 i'm having the<br>
issue, could that be an issue of lossy MP3 still?<br>
<div class="im"><br>
</div></blockquote></div><br>Ron,<br>Keep in mind that G.729a is a low bit-rate CODEC optimized for speech compression. It does not do well with music, or even DTMF tones. G.711, on the other hand, has greater dynamic range, so music sounds better. <br>
<br>It would be nice if Asterisk had an option like CCM that forces MoH to use G.711, while the voice calls still use G.729. <br><br>Sincerely,<br>Trevor Hammonds<br>