[cisco-voip] Modify calling number in SIP invite on CUCM 11

[Deepak Maggo]

Hi,

The problem I have is that we have active recording system which
communicates with the CUCM cluster using a SIP trunk and uses
Built-in-bridge configuration.

The invites that CUCM sends via the SIP trunk show the "External Phone
Number Mask" rather than the four digit extension when make PSTN calls
which will not work according to  the recording system. We need the
External Phone Number Mask on phones to display the correct Caller ID.

Can anyone suggest a way to fix this?

Ideally I need a way to modify the number in the SIP invite but I cannot
find any example of how to do this.

Any suggestions are welcome.

Thanks
*Thanks & Regards,*
*Deepak Maggo*
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