| 摘要 |
PURPOSE:To make unattended PA communication without minding terminals for PA communication, by giving functions managing earth stations for PA communication and number of PA circuits for setting PA circuits to a central DAMA device. CONSTITUTION:Earth stations for PA communication and number of PA circuits regarding PA communication are informed to a central DAMA device 1 from a terminal 3. The device 1 removes the satellite circuits designated by the number of PA circuits from the common loop for circuit assignment of a DAMA system and transfers the satellite circuits to a PA circuit assigning pool. When the device 1 accepts the call from a terminal 10 connected with a terminal DAMA device 6 designated as the earth station for PA communication to another terminal DAMA device 4 designated as the earth station for PA communication, the device 1 assigns a circuit not from the circuit assigning common pool but from the PA circuit assigning pool and sets a PA circuit. When the talking is completed, the device 1 releases the assignment and returns the circuit to the PA circuit assigning pool. In this case, a subscriber can make a call without minding the PA communication. |
