| 摘要 |
PURPOSE: A mobile terminal call service method of a PBX(Private Branch eXchange) is provided to offer a supplementary function to mobile terminal subscribers and control a call without discriminating cable subscribers and the mobile terminal subscriber. CONSTITUTION: When a mobile terminal subscriber generates an originating call, a pBSC(private BSC) transfers information on the originating call to an MSC(Mobile Switching Center) module. The MSC module transfers the received originating call information to an E1 board of a PBX(411). The E1 board transfers the originating call information to a controller(412). The controller transfers a response to the originating call information to the MSC module(413,414). The controller checks a subscriber table corresponding to a phone number of the originating subscriber stored in a memory, scissors of a port of a called subscriber included in the originating call information(415), and receives a standby response signal(416). The MSC module responds to a termination call to the controller(418-420), and responds to an MSC module of the called subscriber(423,424) The controller controls a switch to connect ports between the originating subscriber and the called subscriber and give the alarm to the MSC modules of the originating subscriber and the called subscriber(423-426). When the called subscriber hooks off, the hook-off is informed(432,433) and a response to the informing of the hook-off is performed(429,430). As the hook-off of the called subscriber is transferred to the originating subscriber, a speech path is formed(432,433). The originating and the called subscribers communicate with each other, and then, when the originating subscriber terminates the call and hooks on, the hook-on information is sensed by the controller(434,435). The controller responds to the originating subscriber and cuts off connection between a virtual port connected to the originating subscriber and the switch(435,437). The controller disconnects a communication channel of the called subscriber(438,440), and performs a call clear operation on the called subscriber(442-444). Then, the connection between virtual port and the switch is released. |
