| 摘要 |
PURPOSE:To pull-in an analog subscriber line and also a digital line correspond ing with an ISDN equally and to form a channel by providing a bidirectional internal highway, a highway control section and a line unit sending a signal externally to the base station. CONSTITUTION:When a signal via an ISDN digital line 43 is inputted to a digital line unit 4, the signal is subjected to velocity conversion in an internal highway interface 42 and the result is sent to an internal highway 2. A digital signal inputted via other ISDN digital line in other digital line unit is sent to the highway 2 in other transmission timing. Then the digital signals are arranged on a time base at the input side of a highway control section 3. The signals are rearranged by a format conversion section 21 and the result is inserted to a designated time slot and sent to a relevant mobile equipment. That is, an analog 2-wire subscriber line is pulled-in equally to a digital line corresponding with an ISDN and a speech path is formed. |
