| 摘要 |
PROBLEM TO BE SOLVED: To integrally manage many monitor terminals by several center terminals and one multi-point remote central monitor center apparatus in a remote central monitor center which is used for remote integral monitor at multi-points. SOLUTION: A multi-point remote central monitor center device 3 identifies an identification signal in an urgent mode or a conventional mode, sent from monitor terminals at the arrival of incoming calls from monitor terminals 1-1 to 1-n. Even if all center terminals 5-1 to 5-m are connected in emergency, the monitor terminal connected to the center terminals is switched over automatically. A display means 4 displays the incoming call mode of the monitor terminals. The monitor terminal received in the conventional mode is connected manually to the center terminal in place of the monitor terminal, whose call is received already in the conventional mode and having been connected to the center terminal according to the display of a display means 4. Thus, several center terminals 5-1 to 5-m and a single unit of multi-point remote central monitor center apparatus 3 manage integrally a plurality of the monitor terminals 1-1 to 1-n.
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