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SIP session timer issue

edited Dec 31, 2013 4:52PM in Acme Packet (MOSC) 1 commentAnswered ✓

Hi,

I've recently setup a SIP trunk between our video SIP Proxy (Cisco VCS-Control) and the Acme Packet SBC (net-net 3820 SCX640) via a SIP trunk. A video bridge sits behind the Acme Packet SBC. All's working well apart from the Jabber Video (Movi) client are disconnecting after 30 minutes.

I've done a packet capture and I can see that a session timer of 1800 uac is negotiated at call setup, and the uac tried to refresh after 15 minutes by sending a SIP invite. However the Acme Packet SBC replys with a "420 Bad Extension / unsupported: timer" to the SIP invite and the invite never gets passed through to the video bridge. So after the 30 minutes (1800 seconds negotiated) the video bridge tears the call down.

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