| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize the system which copes easily with movements of subscribers. SOLUTION: A line container section 4 is provided with a plurality of ports, containing lines for subscribers (A)1-(C)3. The line container section 4 detects connection/disconnection information, when any of the ports is connected/ disconnected. A subscriber management section 5 is provided with a logic subscriber data 50, denoting a relation between a subscriber address and port. Upon receipt of disconnect information of any port from the line container section 4, the subscriber management section 5 eliminates only the information of contained ports of the logic subscriber data 50. Upon receipt of the connection information of any port, the management section 5 sets a number of the connected contained port to information of the contained port of the logic subscriber data 50, corresponding to the address. Thus, subscribers are managed as logic subscribers, statically not related to the contained port.</p> |
