Hi,
I just did a call forward noan and call foward busy to an internal phone number from calling an internal DN from another internal phone and .
1. The display show "forwarded for
forwarded 8661 for 8669
The internal caller id is the configure display on the line configuration of the ip phone.
My ccm version is 3.3(2). This the only way to included originating DN. If its a transfer i believe you would only see the caller id of the transfer initiator.
Try this and hope it helps
Tola.