| 摘要 |
PURPOSE:To lighten the labor of an operator and to save the expense for communication in a stored program control type exchange by making automatically tariff information by dialing a special number when making trunk line transmission from an extension. CONSTITUTION:When a subscriber extension A dials a special number to get service tariff information service, ''1'' is set in a memory corresponding to subscriber accommodation position of a caller of a service set memory. When the call is finished and the extension is restored, the information on extension number which is the object of charging and service tariff is sent from a charging device SMDS to a central controlling device CC. The position of accommodation of the subscriber is found out by the extension number, and ringing is sent to the subscriber's extension A. When there is a response, the connection is made to a voice synthesizing device VS, and the data of service tariff sent in are informed to the subscriber's extension A. |
