| 摘要 |
<p>PROBLEM TO BE SOLVED: To inexpensively realize a base station function for data communication by generating at least one clock used in a digital radio part based on at least one reference clock, executing the allocation processing of a slot in a channel and allocating an air slot. SOLUTION: A PIAFS protocol is negotiated between a data terminal and an opposite terminal after a communication channel is established. Clock ISDN and data communication, which are synchronized with ISDN, are inputted to a PHS base band processing part 239 and an I.460 conversion part 236. The PHS base band processing part 239 generates a synchronous clock in a PLL circuit provided inside and transmits/receives radio based on the clock. A synchronizing signal whose synchronism is established inside is outputted from the PHS base band processing part 239 to the I.460 conversion part 236. The I.460 conversion part 236 converts data measurement.</p> |
