Could you, please, help me with the following problem.
- CUCM 7.1(5)
- H.323 Gateway to ISDN (E1)
- IP phones
When someone (with number XXX-XXXX) from ISDN calls and someone (with internal number YYY) answers that call on IP phone, number XXX-XXXX is displayed as Caller ID on IP phone, which is right. But then when this user transfers the call to some other internal number, this last user sees YYY as Caller ID on his IP Phone.
Is there any way to change this behaviour, so that the original Called ID (XXX-XXXX) was displayed on that last user IP Phone.
I've looked thru the forums, but everyone is talking about external call forwarding, and I am needing internal call transfer.
Sorry, I'm not too familiar with CUCM to recommend exactly where to search.
Non-cisco phones probably won't display the needed information. However you can look in a SIP trace. If there is a redirecting number, then it's phone responsability to display it together with the original calling number.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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