| 摘要 |
PURPOSE: A radio interface unit in the WLL(Wireless Local Loop) using mobile communications is provided so as to use data communications or facsimile transmitting/receiving while changing locations by coupling a radio interface unit and a mobile communication terminal. CONSTITUTION: A radio interface unit in the WLL using mobile communications is composed of a radio interface unit(100), a mobile communication terminal(110) and a portable phone interface unit(10). The radio interface unit(100) comprises a data communication unit(60) supporting data communications, a facsimile interface unit(40) supporting facsimile communications and a voice communication unit(50) supporting hands free. The facsimile interface unit(40) is composed of a facsimile modem(41) and a facsimile port(42) connecting a facsimile terminal(120) and the facsimile modem(41). The voice communication unit(50) is composed of a DTMF receiving unit(51) and a phone port(52) connecting a telephone(130) and the DTMF receiving unit(51). The data communication unit(60) is composed of a data transmitting/receiving unit(61) and an RS-232C port(62) supporting the interface between a computer(140) and the data transmitting/receiving unit(61). In addition, the radio interface unit(100) comprises an SLAC(Subscriber Line Audio Codec)(20) and an SLIC(Subscriber Line Interface Circuit)(30).
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