[asterisk-users] g729a compatibility

[Jeff LaCoursiere]

On Thu, 2 Jul 2009, Elliot Murdock wrote:

> Hello!
>
> Which RFC specifies the corresponding number of the formats?
>
> Where in the Asterisk source code does it state the SDP formats?
>
> Does Asterisk follow the formats of IANA?
> (http://www.iana.org/assignments/rtp-parameters)
>
> Thank you,
> Elliot

Perhaps this is falling back too far, but do you have G.729 licenses for 
your asterisk server?

j


>
>
> On Thu, Jul 2, 2009 at 3:44 PM, Elliot Murdock<murdocke at gmail.com> wrote:
>> 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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>>
>
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