transferred calls lose caller ID but CFA do not

[tato386]

I have a CME and a CUCM that have a working SIP trunk between them that is used for extension to extension dialing. If a user on the CME uses CFA to forward PSTN calls to an extension on the CUCM the phone on the CUCM side sees the caller ID of the originating caller.  However, if a user on the CME answers a call from the PSTN and then transfers it to CUCM the call shows the extension of the person who transferred the call.  Any ideas on how to fix this?

Thanks,
Diego

[Chris Deren]

Is this a blind or consult transfer?

[tato386]

I have only tested with consult but ideally we would want it to work for both types. 

Diego

[ajay1komban]

The difference between blind and consult transfers is that, with a consult transfer, the operator phone initiates the transfer. With blind transfers, the Computer Telephony Integration (CTI) port (service device) initiates the transfer.

[alig.norbert]

Have you find out any solution here?

[tato386]

Unfortunately I did not.  Since we were phasing out the CME system we just lived with it until we moved all users to the new system.  

Rgds,

Diego

[alig.norbert]

Remove „asserted-id ppi“ under voice service voip/sip.