| 摘要 |
PURPOSE:To make message services possible easily and definitely, by attaining audible display using the bell of a guest-room telephone set. CONSTITUTION:To the input-terminal side of the automatic telephone switchboard, message service trunk SVT is provided which is connected to the talkie euqipment TKE and message-service operation board SVBD; and SVT causes the chain circuit to make a selection with priority given to a called subscriber through the operation of a key which corresponds to guest-room telephone set SUB so as to actuate marker MKR, and the expansion circuit sends out called-subscriber's number information and office-service-position information. Then, MKR connects SVT to SUB through intra-office trunk IOT, and within the time allotted by the timing circuit of SVT, TKE is connected by the answer from SUB to perform the talkie transmission to SUB, so that the answer confirmation display will be done to SVBD. |
