I think I know the answer to my question but I will ask it anyway. I have a customer that we installed a KX-TDA50 with KX-TVA50 Voicemail system. After hours I have the KX-TDA50 forwarding calls to a cell phone for after hours service. How I have done this is when someone calls in after hours the call will hit line one. The PBX will grab line 2 and call the cell phone number that is entered in at an extension setup to call forward. The problem they are having is they need to see the number of the person that is calling in but instead it is showing the number of line 2 on the PBX. Is there a way to pass the number of the person calling in onto the offsite phone in which the PBX has been programmed for? I know the KX-TDA is not capable of changing the outgoing caller id number which would be a great feature for Panasonic to add if possible.