[cisco-voip] CUCM7 discard digits only for call forwarding

[douzer]

Hello,

I have to find a way, that when someone activates call forwarding on his
DN and someone else calls this phone number, the call gets redirected to
his mobile phone including the phone number of the originate calling party.

The problem is, that I get the calls from the PSTN with leading zeros
like 0041, 0049 etc. The CUCM redirects everything alright but sends
this numbers as calling party numbers.
The phone company told me, that I have to discard this leading zeros, so
that they can send the original calling party number to the redirected
phone number.

I didn't find a way, how I can place a calling party transformation
pattern (for example 0+.!) to manipulate the calling party numbers, just
for call forwarding.

Can someone tell me, where I have to place the calling party
transformation pattern, to discard the zeros?


Consecutively the equipment we're using:

CUCM 7.0.1 business edition
Cisco 2851 as mgcp gateway
Cisco 7945 or 7911 phones


Best regards