Hi All,
I have few queries about Session Timer mechanism (RFC 4028), please clarify
it.
Thanks in advance.
1) If in the initial session establishment (INVITE 200 OK ACK), there was
no session timer info got exchanged and both the end points (User Agents)
supports Session Timer.
If Session-Expires header is present in Re-INVITE/UPDATE message, what will
be the behaviour of User Agent ??
A) Allow to negotiate B) Ignore it
>> Allowing User Agent to negotiate session interval, looks like ok.
Is there is any rela time scenario ??
2) If support for Session Timer (ST) is not enabled at User Agent (UA) and
User Agent (UA) sends INVITE with Support header with value as 'timer' to other
end point.
And end point responds with 2xx response with Require header with value
'timer'.
What User Agent (UA) should do ??
a) send ACK, followed by BYE request
b) Let application to decide
c) ignore it and establish call
i) If refresher parameter in Session Header is set to uas
a) Let application to decide
b) send CANCEL request
c) send ACK, followed by BYE request
d) ignore it and establish call
ii) If refresher parameter is set to uac
a) send ACK, followed by BYE request
b) ignore it and establish call
c) Let application to decide
Regards,
B Prathap
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