[asterisk-users] RTP Mixer

[Joshua Colp]

Akashdeep Dutta wrote:
> Does Asterisk really follow 3550 for CSRC. I am confused.
> 
> On Mon, 7 May 2007 20:19:24 +0630, Akashdeep Dutta wrote
>> Hi
>>
>> Does asterisk uses CSRC. I was trying to create a situation with 4 
>> simultaneous users talking and executed ethereal to capture logs, studies RTP 
>> but never found CSRC count to be more than 0.
>>
>> Can somebody explain me.
>>

Asterisk isn't an RTP mixer in the sense you are thinking of. Asterisk 
mixes/exchanges audio frames in a protocol independent fashion. The 
mixed frame then gets sent into the RTP core where it gets turned into 
an RTP packet that is sent out.

Joshua Colp
Software Developer
Digium, Inc.