[SR-Users] Rewrite Invite w/o sdp

[Serge Yuriev]

Hello,

Our PBX (Cisco CallManager) uses "late offer" sending invites w/o sdp. After receiving provisional reply 18x it answers prack with sdp
I'm trying to realize following scenario:

1 Pbx (invite no sdp)
2 kamailio hold and saves invite
3 send 183 to Pbx 
4 get prack with sdp
5 construct new invite from saved one and sdp from prack
6 send it to calee

Is this possible? How to save invite for future use?

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Serge via mobile