| 摘要 |
PURPOSE:To prevent the increase in the storage capacity and the processing time of a central processor equipment by grouping plural multi-function telepnone sets to store information of each telephone set connected to a multi-function telephone set control circuit. CONSTITUTION:The multi-function telephone sets 160-165 are grouped into plural groups and plural multi-function telephone set control circuit 140-142 controlling respectively the multi-function telephone sets of each group and the central processor equipment 100 are connected by specific information transfer lines 110-112 and information return lines 120-122 respectively. Moreover, an incoming multi-line line number information, ringer control information and lamp control information or the like are transmitted from the central processor equipment 100 to all the multi-function telephone set control circuits 140-142 by using a common information transfer line 130. The plural multi-function telephone set control circuits 140-142 perform incoming display and ringer control or the like respectively to the multi-function telephone sets 160-165 to which the same line number as the incoming multi-line is assigned. |
