Hi,
Here is a scenario that we are facing where our proxy
is implementing RNA (Ring on No answer) i.e. it try to
reach all the possible end point for dialed number.
Calling
UA -------> Proxy |---> end point 1
|---> end point 2
:
:
|---> end point n
This proxy is different from forking proxy. It tries
all end points one after another.
So my first question is how long should the UA wait
before one of the end point actually responds? (Is it
timer C)
Another issue is that this proxy sends CANCEL to UA if
endpoint does not respond and UA destroys it state
machine there itself.
Is there a mechanism in SIP whereby UA can
differentiate this CANCEL from other CANCEL, since
PROXY is still trying to contact other end-point in
this case??
Thanks in advance. Even a slight reference will of
great help so pls respond.
Regards
Mandeep
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