[asterisk-dev] Idea for GSoC: Support of PRACK in Asterisk

[Jared Smith]

On Mon, 2009-03-23 at 21:50 -0400, Smita wrote:
> I have an idea for GSoC. From what I know, there is no early media
> support in Asterisk. Hence, the only media change request supported is
> after the INVITE transaction has been established.

That is not correct... Asterisk definitely supports early media.  Try
this dialplan as an example:

exten => 123,1,Wait(1)
exten => 123,n,Progress()
exten => 123,n,Playback(tt-weasels,noanswer)
exten => 123,n,Answer()
exten => 123,n,Playback(office-iguanas)
exten => 123,n,Hangup()


-- 
Jared Smith
Training Manager
Digium, Inc.