8 Aug
2006
8 Aug
'06
12:52 p.m.
Klaus Darilion wrote:
Jiri Kuthan wrote:
Either the UAC or the UAS sends session refresher requests according to
RFC 4028. The proxy just helps in setting up the session timer which can
be problematic if only one side supports this extension.
Miklos
You can write a ser script to implement session
timer, we have indeed
done that.
Does that really work? Do you send reINVITEs from the SIP proxy?
Wouldn't then you have to change the CSeq of requests sent by the clients?
regards
klaus
That still does not give you access to call
state. You would have to
write own module which keeps it and hope that session timer will
provide needed reliability
(which may not be always the case).
-jiri
At 12:26 01/08/2006, Alexandre Snarskii wrote:
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As far as I know, SER does not have functionality of limiting
number of calls on per-user basis. It was discussed years ago,
and the reason for that was "We don't have ability to know is call
still alive"
(http://lists.iptel.org/pipermail/serusers/2004-November/013035.html)
But, in April 2005, RFC 4028 (Session Timers in SIP) appeared, and
it (at least theoretically) can be utilised to achieve knowlege of
active dialogs, and, as result - on number of active calls.
And this RFC looks like supported on Cisco gateways:
U X.X.X.X:59104 -> X.X.X.X:5060
INVITE sip:aaaaaaa@X.X.X.X:5060 SIP/2.0.
Supported: 100rel,timer,replaces.
^^^^^
Min-SE: 1800.
^^^^^^^^^^^^^^
User-Agent: Cisco-SIPGateway/IOS-12.x.
Question: is this RFC/functionality planned to be supported in SER ?
If not - are there any good intro on "How to write SER module by
yourself" ? :)
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Jiri Kuthan http://iptel.org/~jiri/
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