[VoiceOps] VoIP - Call forwarding issue

Here is the deal: user is trying to have calls forwarded to his cell phone. When enters: 9-xxx-xxxx, local callers get forwarded fine, but long distance callers get an error. Alternatively, when user enters: 9-1-615-xxx-xxxx, long distance callers can now get through, but local callers get the same error. Using Cisco 2851 with CUE Cisco IP Phone:7945 Any input? Thank you.