| 摘要 |
PURPOSE:To supply a talkie subjected to program search through the talkie trunk connection to a subscriber terminal equipment by reading the data of the relevant address of a random access memory by a control signal and sending it to a channel of a digital telephone exchange. CONSTITUTION:A time division switching network TDNW1 and a line concentrator LC2 are connected by a 2Mb/s highway (2MHW) 6 and connected to a subscriber telephone set SUB4 from the LC2 via a subscriber circuit SLIC3. The TDNW1 and the digital talkie trunk DTKY5 are connected via other 2Mb/s highway 7. The 2Mb/s highways 6, 7 are highways where data of 64kb/s per one time slot is subjected to 32 time slot multiplex. A subscriber line and the bus of the DTKY5 are connected by the control of the software in the TDNW1 to send the announcement message to the SUB4.
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