| 摘要 |
PURPOSE:To eliminate the need for special processing such as designating connection of plural talking channels by providing a service trunk for connecting plural talking channels so as to use a trunk path between stations for attaining switching and to rearrange plural talking channels for connection to a terminal in a telephone exchange network comprising digital links. CONSTITUTION:The service trunks STRKA, STRKB1 and ATRKB2 using a trunk path between stations so as to connect plural talking channels and rearranging the talking channels are provided and the plural talking channels are connected to a path between required terminals by using the service trunks. The information to correspond the number of connected talking channels and the talking channel between terminals is transmitted and received between the service trunks STRKA and STRKB2 through a control channel, the calling is repeated by the number of the talking channels required from the service trunk STRKA for connecting channel group and the information is connected to an idle channel of the service trunk STRKB2 for connecting channel group by the exchange processing of a network NW2.
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