| 摘要 |
<p>A communication system which can establish a control link between a radio base station (20) and a switchboard station (10), without assigning beforehand any representative or proper VPI / VCI to the radio base station which is to be newly established. A switchboard station (10) transmits a cell which includes a link establishment request signal to a newly established radio base station. Therefore, the radio base (20) station can receive the cell, regardless of the VPI / VCI values , because a mask set up unit in the radio base station sets mask approval, beforehand. Further, the radio base station, after receiving the cell which includes a link establishment request signal, stores the VPI / VCI values included in that cell in a down cell header information memory, and transmits a response signal. <IMAGE></p> |
