Auto Attendant Call Forwarding: How to Mask Caller ID for External Transfers

Hello everyone, I have a question about the configuration of the Auto Attendant.

A brief explanation of the problem: I am currently creating a hotline for one of our business units. A routing point of the Auto Attendant should be that the number 3 is forwarded to the specified external number by pressing a key. Everything works as it should. Now comes the problem: This number, to which the call is then forwarded, is the location of an attendant console (AC-Win system) of our Hipath4000 telephone system of one of our receptions. This can display which hotline the caller is currently coming from. This requires the Auto Attendant to remove the number of the actual caller when forwarding and to forward the call in the context of another predefined number.

Is it possible to realize this? Via caller ID policies or something similar?

Best regards
Elias