| 摘要 |
PURPOSE: A method for controlling a data service in a mobile exchange is provided to configure a wireless data service IWF(Inter Working Function) as a gadget of the mobile exchange, and to make the mobile exchange control the IWF. CONSTITUTION: If an idle MS(Mobile Station)(10) requests asynchronous data or a fax service, an MX(Mobile EXchange)(40) checks whether a calling subscriber is capable of calling and checks a called subscriber number. If the number is located in a local station, the MX(40) performs a paging and checks service options of the calling and a called subscriber. If the two subscribers request the asynchronous data or the fax service, the MX(40) starts a data service local call processing. If the called subscriber is registered in other exchange, the MX(40) occupies an outgoing trunk. If the service option of the calling subscriber requests the asynchronous data or the fax service, the MX(40) starts a data service outgoing call. The MX(40) occupies a wireless data communication IWF(Inter Working Function)(100) to connect a speech path, and transmits a response of a called control station to the IWF(100) and a calling control station, then starts a data service billing. If the MX(40) receives a response from a called exchange, the MX(40) transmits the response to the IWF(100) and the calling control station, then starts a data service billing. If a hand off is generated during a busy state, the MX(40) changes the speech path. If an additional service is requested, the MX(40) ignores the request. If a subscriber cuts off the speech path, the MX(40) performs a data service cancellation processing.
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