Hi, In SIP, ring_ready will send a 180 ringing, pre answer will send a 183 with a session description, so that some audio can be exchanged while the call isnt answered yet (used a lot for inband error messages etc). Regards, Mathieu Rene Avant-Garde Solutions Inc Office: + 1 (514) 664-1044 x100 Cell: +1 (514) 664-1044 x200 mrene@avgs.ca On 29-Aug-09, at 9:50 PM, Jason White wrote:
Max Bridgewater <max.bridgewater@gmail.com> wrote:
Hi, Assuming an inbound call, I have trouble understanding what the supposed difference between the following two set of instructions is:
session.execute("ring_ready"); session.set("set", "ringback=/home/ring.wav");
Ring_ready sends a SIP "ringing" message and will use your device's default ringback sound - at least, that has been my experience. I should remember the message number in the SIP protocol, but I don't (the SIP experts here will undoubtedly have the details at the ready).
and
session.preAnswer(); session.streamFile("/home/ring.wav")
I think that will play the file as early media.
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