Hi,
As specified in the draft "draft-ietf-sip-session-timer-11.txt"
"If no 2xx response to a session refresh request is received before
the session expiration, the UA SHOULD send a BYE request to
terminate the session. It SHOULD send this BYE slightly before
session expiration. The minimum of ten seconds and one third the
session interval is RECOMMENDED.
For example, if the session interval is 120 seconds, one third
of this is 40 seconds. Since the minimum of 10 seconds and 40
seconds is 10 seconds, the BYE would be sent 10 seconds before
the session expires."
Let us assume the session interval is 1800 seconds,
So I should send re-INVITE after 900 seconds from call establishment,
If I don't get any response for the re-INVITE sent then I should send the
BYE after 1790 seconds from call establishment.
But in the time from 900-1790, what should I do
Should I retransmit the re-INVITE repeatedly for the interval 900-1790?
If yes - then number of re-INVITE will be more than 7 and it violate the condition of any txn.
If no - then what is my behavior, can I send BYE after sending 7 retransmission of re-INVITE .
Regards,
Ravi Jindal
HUGHES SOFTWARE SYSTEMS
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