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[donbru01]

Hi at , i have 3cx connected via trunk sip to another pbx.
When from pbx i call f.e. ring group 2400 3cx and answer call extension 2588 we want see on dosplay of caller
2588 .
3cx send back connected number presentation?

 

[leejor]

You will have to provide additional detail about your set-up. Type of trunks used at each end, type of PBX at the far end, what currently shows as caller ID, etc...

 

[donbru01]

Trunk is alcatel oxe or cucm 9 , hi have trace via wireshark call to 3cx .
Alcatel or cucm send invite to 3cx 2400 , than when 3cx answer call from 2588 semd back ok wih sdp but nothing
About 2588 that is extension that answered call.
CUCM f.e. if receive invite to ring group 3400 and answer call from 3488 send back ok with sdp and add remote party id 3488 = called

 

[leejor]

How do you have the trunks set-up? Is 3CX registering to the Alcatel as if the Alcatel were a provider, using a generic trunk? Is the Alcatel registering to 3Cx with 3CX set-up as a slave Bridge trunk? Is a trunk from one end registering to an extension on the other PBX? There are a number of ways of interconnecting, each will send caller ID in different ways.
Even between two 3CX PBXs using a bridge trunk, caller ID does not behave the same as within a single PBX.