As I understand it, if you are using MeetMe, or if there is any codec
translation, or having to listen to DTMF (it should only have to decode
the audio to listen to INBAND DTMF, I don't know if it does), or other
sorts of things that requires Asterisk to listen to or manage audio the
audio will be decoded into SLN format.
I believe for MeetMe all the audio channels are decoded into the SLN
format then that audio in SLN format is handed to the Zaptel driver to
use some sort of voodoo magic to mix the audio.
Asterisk does not touch the actual audio except for after it has been
converted to SLN format.
Akashdeep Dutta wrote:
How does it really mix the packets. If i have three participants talking
together and
packets are reaching Asterisk, How does it mix them.
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.
On Mon, 7 May 2007 21:10:12 +0630, 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.
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