| 摘要 |
PURPOSE:To correspond to various services in prescribed number of trunks by changing the types of service talkies in respective trunks in accordance with the quantity of incoming calls at every service. CONSTITUTION:When plural incoming calls are sent from subscribers, information on the types of the incoming calls and on an idle talkie trunk are transferred from a control part 3 to an I/O controller 12. A processor 7 sets to a direct memory access controller 10 address information having announce voice data corresponding to the types of the calls by a voice memory 11, and the number of voice synthesizing device connected to the talkie trunks. The direct memory access controller 10 transmits voice data to respective voice synthesizing device in time division and periodically based on the set value. Thus, efficient correspondence to plural types of the incoming calls which largely fluctuate in accordance with a time band.
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