I am assigning a DID that starts with 9, which is our SPRE code. I'm going to build an IDC tree to convert it to an internal DN. My question is, I also want to assign one of these DIDs as a fax number for him (9001) but am wondering what number will show on the outbound faxes he sends. Will the recepient see NPA-NXX-9001 or will they see the ext I convert 9001 to (eg: NPA-NXX-3001)? I appreciate your help.