| 摘要 |
<p>PURPOSE:To attain the form of close area connection more freely than the close area connection system having been in use so far by applying the registration/release and communication of closed area connection for each terminal equipment accommodated in a packet multiplexer PMX. CONSTITUTION:Registration/release of a closed area connection is attained to PMX 2a, 2b and closed area connection information is added as a call user data in a CR(call) packet sent from the PMX 2a, 2b to a packet exchange network 3. In the packet exchange network 3, the call user data is sent to an incoming PMX without any modification. The incoming PMX checks the call user data to allow the connection. Thus, the communication by the closed area connection for each accommodated terminal equipment having being disabled so far is attained.</p> |
