| 摘要 |
PURPOSE: A small PBX(Private Branch Exchange) is provided to transmit voice signals received through a VoDSL(Voice over DSL(Digital Subscriber Line)) network to a wireless telephone of a subscriber system, by using the VoDSL network, so as to improve QoS(Quality of Service) and to reduce a cost for voice calls. CONSTITUTION: A VoDSL(Voice over DSL(Digital Subscriber Line)) interface(230) converts a data signal or a voice signal transmitted through an external network into signals for being processed in an internal network, or converts a data signal or a voice signal supplied from the internal network to transmit the data signal and the voice signal through the external network. A main controller(232) decides transmission paths of the voice signals, and generates control signals. An R/F controller(233) converts the voice signals into R/F signals, and controls voice signal transmissions with a wireless telephone(252). An R/F transceiving card(234) transmits the R/F signals to the wireless telephone(252). |
