[Freeswitch-users] What is the difference between preAnswer and ring_ready?
mrene_lists at avgs.ca
Sat Aug 29 20:54:29 PDT 2009
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).
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mrene at avgs.ca
On 29-Aug-09, at 9:50 PM, Jason White wrote:
> Max Bridgewater <max.bridgewater at gmail.com> wrote:
>> Assuming an inbound call, I have trouble understanding what the
>> difference between the following two set of instructions is:
>> session.set("set", "ringback=/home/ring.wav");
> Ring_ready sends a SIP "ringing" message and will use your device's
> 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).
> I think that will play the file as early media.
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