i`m i doubt that the following Sip message we are receiving from an Endpoint, connected via a Sip Trunk is right.
For me it seems there are Information missing.
Let me explain the traffic case
An Attandant console is connected via a Sip Trunk at the CUCM system that is running version 8.5.
In the case these Attandant console is switched to night mode and an internal cisco extension calling the internal or external queue number the call goes fail. ( Same happen when i calling from an external phone )
So we have these call flow
cisco Phone ----> CtiRP Number 8890 ---> Sip Trunk ----> Attendant Server ----> Night extension is 1221
The Sip signalling flow is right, we receiviing a SIP Message 302 Move Temporary with a contact address
firstname.lastname@example.org but not part of the content is the reason.
For me, the information regarding Diversion reason are missing but mandatory adn so the call goes fail
I would like to know your opinion if i`m right with my assumption or not.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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