CDMA WIRELESS PRIVATE EXCHANGE/KEYPHONE SYSTEM FOR PROVIDING INTEGRATED ACCESS OF WIRED TELEPHONE NETWORK AND MOBILE TELEPHONE NETWORK

摘要

PURPOSE: A CDMA wireless private exchange/keyphone system for providing the integrated access of a wired telephone network and a mobile telephone network is provided to integrate the incoming/outgoing call service of a mobile communication network and the incoming/outgoing call service of a wired telephone network using a CDMA cellular/PCS mobile phone. CONSTITUTION: A wired telephone access part(4) converts the voice encoder data of a mobile terminal received through a private base station channel bank part(2) into a PCM signal and transfers it to a wired telephone network. A mobile terminal RF transceiver part(6) monitors incoming call requests from a mobile communication network and transmits and receives RF signals to transmit and receive the information of mobile terminal incoming calls to the mobile communication network. A CDMA forward link monitor part(5) monitors the pilot, synchronous and paging channels of the mobile communication network and extracts the information of a necessary channel. A mobile terminal channel bank part(7) consists of a plurality of mobile terminal modulation/demodulation channels to modulate and/or demodulate mobile terminal incoming calls existing within the service coverage of a CDMA wireless private exchange/keyphone system and to relay them to a private base station. A system control part(3) separates CDMA protocol data and voice data from a traffic frame, exchanges the voice data between the private base station channel bank part(2) and a wired telephone network access part(4) or the mobile terminal channel bank part(7) at a high speed, and analyzes and processes the protocol data. A channel conversion command part(8) transmits a channel assignment message to modify a CDMA channel to be used by a mobile terminal into a CDMA frequency channel to be used by the private base station.