Call forwarding fails after Set Caller ID


I have the following situation:

Inbound - IVR - Set Caller ID - Ring Group

When the Set Caller ID is in the play I can’t forward any calls anymore. The lines seems to be lost in nowhere… When I set Ringgroup after the IVR the problem is gone…

I think because I modified the Caller ID? ${CALLERID(num)} ==> Vk: ${CALLERID(num)}

Is there another way to do so?

PBX Firmware:
PBX Service Pack:

All up to date.

Thank you!

What is a PBX firmware pack?

What version of FreePBX?

How was this system installed?

Did you make any changes to the code? If so what changes?

Lastly, log output at time of failed call.