| 摘要 |
PURPOSE: A method of supplementing overflow phenomena of analog fax data in a WLL(Wireless Local Loop) terminal system is provided to give a high-quality wireless fax data service by securing fax data transmissions without overflow phenomena and without adding an internal memory to a fax board while transmitting the fax data. CONSTITUTION: If a call is connected, an analog fax(100) outputs a CNG(Calling Tone) signal to a wire/wireless fax(400). The wire/wireless fax(400) outputs a CED(Called Station ID) signal and a DIS(Digital ID Signal) to the analog fax(100). The analog fax(100) inputs the DIS, and outputs a DCS(Digital Command Signal) and a TCF(Training Check Frame) signal to the wire/wireless fax(400). The wire/wireless fax(400) inputs the DCS and the TCF signals, and outputs a CFR(Confirmation To Receive) signal to the analog fax(100). The analog fax(100) transmits fax data to a fax board(201) of a WLL(Wireless Local Loop) terminal(200). The fax board(201) temporarily stores the received fax data in an internal memory, and outputs the fax data to an IWF(Inter Working Function)(300) through an RF transceiver(202). The IWF(300) inputs the fax data to load dummy data with the fax data, and outputs the data to the wire/wireless fax(400). The wire/wireless fax(400) inputs the fax data loaded with the dummy data, and outputs the fax data. The analog fax(100) outputs an MPS(Multi Page Signal) to the wire/wireless fax(400). The fax board(201) decides whether the fax data stored in the internal memory is over 25% of the entire memory capacity. If so, the fax board(201) generates an RTP(Retraining Positive) signal and outputs the RTP signal to the analog fax(100). The analog fax(100) inputs the RTP signal and sequentially operates.
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