If neither of the UAs support session timer then IMHO the only option is B2BUA. I would recommend you to complain to the administrator of ProxyWithTimer since calls longer than 30 minutes are pretty common.
Jan.
On 06-08 10:46, Jamie Yukes wrote:
UAC -> SER -> ProxyWithTimer -> UAS
Both UAC and UAS do not support session timers, or session refresh requests. However, ProxyWithTimer is losing call state after 30 minutes.
The only thing I can control is SER. The piece I read "draft-ietf-sip-session-timer-13.html" suggests that it should only be implemented at UAC or UAS. So am I restricted to using SER as B2BUA, or would it be theoretically possible to implement this in stateful proxy mode, without the UAC's cooperation? (The CSeq will be out of sync, which gets kludgey)
Jamie Yukes
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