Hi Radha,
A Session Timer refresh is a better option to check whether a SIP
session is alive or not.
Because OPTIONS can be sent outside a dialogue too.A session timer
re-INVITE/UPDATE will
always be sent within a dialog, so its response is the most reliable way
to determine whether
a session is o
Hi,
Considering that both UAC and UAS support Session Timer.
If UAC sends an INVITE request with the refresher parameter set as 'uas'
in the Session-Expires header, the UAS has to have Session-Expires
header with the refresher parameter set to 'uas'.
Now when the UAS sends an UPDATE, what will the
