WLL TERMINAL HAVING ANALOG FAX BOARD AND ANALOG FAX INTERFACE CONTROL METHOD IN WLL TERMINAL

摘要

PURPOSE: A WLL terminal having an analog fax board and an analog fax interface control method in the WLL terminal are provided to provide a reliable analog G3 fax service by installing an analog G3 fax board inside a CDMA WLL terminal and controlling the analog G3 fax board according to an IS-99 method to recognize an analog G3 fax call as an IS-99 type PC fax call. CONSTITUTION: An SLIC(3) matches analog data transmitted from general phones(1) respectively connected to a TEL1 and a TEL2 port and from a local fax(2) to transmit it, matches analog data received from an analog G3 fax board to transmit the data to the general phone(1) or the local fax(2) through the TEL1 and TEL2 ports. A DTMF receiver(4) receives dial data inputted through the SLIC(3). An SRAM(5) and a flash memory(6) store a program data required for operation of the analog G3 fax board and data generated in the operation. An external UART(7) forms a serial data communication path between an MSM and an analog G3 fax board when a call is terminated in a transmission and reception. A switch(8) is connected to the external UART(7) and a UART in the analog G3 fax board and performs a switching operation according to an ON/OFF control signal of the MSM. A multiplexer(9) connects the MSM to the external UART(7) or the UART of the analog G3 fax board according to a select signal of the MSM. The analog G3 fax board(10) converts the analog data transmitted from the local fax(20) into digital data according to an IS-99 method and converts the digital data received from the MSM into analog data according to the IS-99 method and transmits the data to the local fax(2), to thereby perform an analog G3 fax service in a WLL terminal. The MSM(20) is installed in the WLL terminal for controlling an analog G3 fax interfacing operation of the analog G3 fax board(10). An RF unit(30) processes the digital transmitted from the MSM(20) and transmits it to a base station of a WLL system, and converts the RF signal received from the base station so as to be processed in the MSM(20) and transmits it to the MSM(20).