[asterisk-users] g729a compatibility

[Elliot Murdock]

Hello,

Thank you clarifying that.

However, if that is the case, why is Asterisk sending back PCMU
packets (instead of G729), which the device is not enabled for and
subsequently, fails the call?

Could the mapping be disabled or not properly mapping to the G729
driver in a certain versions of Asterisk?

Thanks,
Elliot

On Thu, Jul 2, 2009 at 3:25 PM, Kevin P. Fleming<kpfleming at digium.com> wrote:
> Elliot Murdock wrote:
>> Hello!
>>
>> I noticed that the SIP packet contains this line:
>>
>> m=audio 60000 RTP/AVP 18 98 96 97 101 13
>>
>> However, there is no rtpmap that describes 18.  Media format 18
>> Apparently refers to G729, but there is no rtpmap in the SDP for it.
>> Since G729 is a registered and known format is there any way for
>> Asterisk to negotiate it within an explicit rtpmap?
>
> Yes, that is already supported. Asterisk does not require rtpmap entries
> for well-known (RFC specified) codec mappings.
>
> --
> Kevin P. Fleming
> Digium, Inc. | Director of Software Technologies
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> skype: kpfleming | jabber: kpfleming at digium.com
> Check us out at www.digium.com & www.asterisk.org
>
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