JPS6464493A - Digital key telephone system - Google Patents
Digital key telephone systemInfo
- Publication number
- JPS6464493A JPS6464493A JP22127587A JP22127587A JPS6464493A JP S6464493 A JPS6464493 A JP S6464493A JP 22127587 A JP22127587 A JP 22127587A JP 22127587 A JP22127587 A JP 22127587A JP S6464493 A JPS6464493 A JP S6464493A
- Authority
- JP
- Japan
- Prior art keywords
- designation
- telephone system
- key telephone
- digital key
- equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Small-Scale Networks (AREA)
Abstract
PURPOSE:To reduce the number of connecting wirings at the time of connecting many slave main equipments and to simultaneously call the plural slave main equipments by one transmission operation from a main equipment, by multipoint connecting the plural slave main equipments by one master main equipment of a digital key telephone system. CONSTITUTION:The intersystem connecting interface unit 24 of the plural slave main equipments 2a, 2b-2g is connected to the intersystem connecting interface 14 of the one master main equipment 1 of the digital key telephone system. The unit 14 of the main equipment 1 of this system designates the addresses of the slave main equipments 2a, 2b-2g to transmit control data and voice data. The designation of the address attains the simultaneous designation of all the slave main equipment 2a, 2b-2g, the simultaneous designation of an arbitrary combination and an individual designation. Only at the time of simultaneously designation or individually designating its own equipment, the unit 24 receives the control and the voice data.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221275A JP2654025B2 (en) | 1987-09-04 | 1987-09-04 | Digital key telephone equipment |
US07/230,799 US4887264A (en) | 1987-09-04 | 1988-08-10 | Digital key telephone system |
CA000574298A CA1296413C (en) | 1987-09-04 | 1988-08-10 | Digital key telephone system |
KR1019880011374A KR910005471B1 (en) | 1987-09-04 | 1988-09-03 | Digital key telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221275A JP2654025B2 (en) | 1987-09-04 | 1987-09-04 | Digital key telephone equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6464493A true JPS6464493A (en) | 1989-03-10 |
JP2654025B2 JP2654025B2 (en) | 1997-09-17 |
Family
ID=16764224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62221275A Expired - Fee Related JP2654025B2 (en) | 1987-09-04 | 1987-09-04 | Digital key telephone equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2654025B2 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5687970A (en) * | 1979-12-18 | 1981-07-17 | Nippon Telegr & Teleph Corp <Ntt> | Digital button telephone system |
JPS62122354A (en) * | 1985-11-21 | 1987-06-03 | Iwatsu Electric Co Ltd | Method and equipment for data transmission |
JPS62135038A (en) * | 1985-12-06 | 1987-06-18 | Nec Corp | Data communications system for slave processor |
JPS62221276A (en) * | 1986-03-24 | 1987-09-29 | Seiko Instr & Electronics Ltd | Thermosensitive recorder |
-
1987
- 1987-09-04 JP JP62221275A patent/JP2654025B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5687970A (en) * | 1979-12-18 | 1981-07-17 | Nippon Telegr & Teleph Corp <Ntt> | Digital button telephone system |
JPS62122354A (en) * | 1985-11-21 | 1987-06-03 | Iwatsu Electric Co Ltd | Method and equipment for data transmission |
JPS62135038A (en) * | 1985-12-06 | 1987-06-18 | Nec Corp | Data communications system for slave processor |
JPS62221276A (en) * | 1986-03-24 | 1987-09-29 | Seiko Instr & Electronics Ltd | Thermosensitive recorder |
Also Published As
Publication number | Publication date |
---|---|
JP2654025B2 (en) | 1997-09-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |