PURPOSE: To improve efficiency in call processing, by enabling an operator to call an extension subscriber by depressing a call button after the talk regardless of the extension number and to inform the subscriber of information on call charge.
CONSTITUTION: After calling a party subscriber through originating repeating connection, an operator depresses the charge button before the operator releases button, and the information is transferred to common controller 2, which memorizes the connection information of extension subscriber A and supervises the telephone conversation. After the conversation, controller 2 allows the office trunk supervisory button on B board 4 to flush and depressing the trunk supervisory button by the operator transfers information on a call charge, which is displayed. With the call button depressed by the operator, subscriber A is connected to B board 4 under the control of controller 2 and then, the operator informs A of the call charge on the display part.
HAYASHI KIYOBUMI
INOMOTO NORIHIKO
SEKIGUCHI JIROU
| JPS4722883A | ||||
| JPS4823923U | 1973-03-19 |
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