Patent ID: 7720039

Claim:
A method of routing calls from a mobile unit to a destination location, the method comprising: registering the mobile unit with a wireless adjunct through a radio transmit point (RTP), the wireless adjunct being in communication with a private branch exchange (PBX) via a PBX communications link, the RTP via a packet data network, and an external radio frequency (RF) source via an RF source link; the wireless adjunct responding to a call setup request from the mobile unit; the wireless adjunct querying a subscriber database to determine if the mobile unit is a resident or a guest of the PBX; if the mobile unit is a resident of the PBX, the wireless adjunct routing communications data from the mobile unit through the PBX to a first destination location; and if the mobile unit is a guest of the PBX, the wireless adjunct routing communications data from the mobile unit through the external RF source to a second destination location.