Thanks for your response<br><br><b><font size="4">Which of the codecs supported on asterisk is best for GSM and CDMA phones connecting over sip?</font></b><br><br><div class="gmail_quote">On Fri, May 30, 2008 at 8:34 PM, Steve Underwood <<a href="mailto:steveu@coppice.org">steveu@coppice.org</a>> 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="Ih2E3d">Julio Arruda wrote:<br>
> Steve Underwood wrote:<br>
><br>
>> Robor Oghene wrote:<br>
>><br>
>>> Hi,<br>
>>><br>
>>> Do CDMA phones use the gsm codec?<br>
>>><br>
>> Even GSM phones rarely use the GSM 06.10 codec that is in Asterisk these<br>
>> days. CDMA never did.<br>
>><br>
><br>
> Isn't AMR supposed to be the codec used in GSM nowadays ? I remember<br>
> seeing something like this in Nortel PVG/Packet Trunking for GSM,<br>
> AMR/AMR-HR or something like that.<br>
><br>
</div>AMR can be used with 2G GSM, but is most commonly used with 3G UMTS<br>
(along with AMR-WB, the wide band version). The commonest codecs for GSM<br>
are the EFR (enhanced full rate) and HR (half rate) codecs.<br>
<font color="#888888"><br>
Steve<br>
</font><div><div></div><div class="Wj3C7c"><br>
<br>
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