JPS6464492A - Digital key telephone system - Google Patents

Digital key telephone system

Info

Publication number
JPS6464492A
JPS6464492A JP22127487A JP22127487A JPS6464492A JP S6464492 A JPS6464492 A JP S6464492A JP 22127487 A JP22127487 A JP 22127487A JP 22127487 A JP22127487 A JP 22127487A JP S6464492 A JPS6464492 A JP S6464492A
Authority
JP
Japan
Prior art keywords
highways
systems
control data
voice
main
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
Application number
JP22127487A
Other languages
Japanese (ja)
Other versions
JP2654024B2 (en
Inventor
Hiroshi Mano
Masayuki Tsurusaki
Yoshiichi Sano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62221274A priority Critical patent/JP2654024B2/en
Priority to US07/230,799 priority patent/US4887264A/en
Priority to CA000574298A priority patent/CA1296413C/en
Priority to KR1019880011374A priority patent/KR910005471B1/en
Publication of JPS6464492A publication Critical patent/JPS6464492A/en
Application granted granted Critical
Publication of JP2654024B2 publication Critical patent/JP2654024B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Small-Scale Networks (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To easily realize the inter-system communication of a non telephone system terminal without using a modulator/demodulator, by transmitting/ receiving a voice and control data between the system through a digital interface circuit. CONSTITUTION:Highways 3, 4 between the systems are connected to a connecting interface unit 14 between the systems of the master main equipment 1 of a digital key telephone system and the connecting interface unit 24 between the systems of the plural slave main devices 2a, 2b-2g are connected to the highways 3, 4. To the respective units 14, 24, speech highways 11, 21 and data highways 12, 22 are connected to transmit/receive the voice and the control data between the systems. Then, the unit 14 of the main equipment 1 designates the addresses of the main equipments 2a, 2b-2g to transmit the control data and the voice data. The unit 24 of the main equipments 2a, 2b-2g receives the control data and the voice data only when the address of its own equipment is designated by the main equipment 1.
JP62221274A 1987-09-04 1987-09-04 Digital key telephone equipment Expired - Fee Related JP2654024B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62221274A JP2654024B2 (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
JP62221274A JP2654024B2 (en) 1987-09-04 1987-09-04 Digital key telephone equipment

Publications (2)

Publication Number Publication Date
JPS6464492A true JPS6464492A (en) 1989-03-10
JP2654024B2 JP2654024B2 (en) 1997-09-17

Family

ID=16764206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62221274A Expired - Fee Related JP2654024B2 (en) 1987-09-04 1987-09-04 Digital key telephone equipment

Country Status (1)

Country Link
JP (1) JP2654024B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JP2654024B2 (en) 1997-09-17

Similar Documents

Publication Publication Date Title
EP0139405A3 (en) Data transmission system
KR880005779A (en) Digital Telephony System and Its Communication Method
EP0313313A3 (en) Communication system and communication method
EP0324975A3 (en) Transmission system for telephone communication or data transfer
ES8507700A1 (en) Distributed PABX
EP0268355A3 (en) Optical communications system
ES8604707A1 (en) Integrated voice/data/control switching system.
JPS6464492A (en) Digital key telephone system
AU552458B2 (en) Digital electronic switching
ZA821832B (en) A circuit arrangement for a data telecommunications exchange
JPS6481596A (en) Extension communication system in isdn user bus
JPS54116802A (en) Privacy communication system
JPS6436250A (en) Expanded telephone system
RU2106008C1 (en) Telecommunication system which is controlled by computer
JPS6464494A (en) Digital key telephone system
JPS62135043A (en) Line changeover circuit
JPS56119564A (en) Key telephone system
JPS6419859A (en) Tele-commander equipment
JPS6314598A (en) Private branch radio communication system
KR960027938A (en) Digital trunk line connection device
JPS6436239A (en) Multiplex transmission equipment
JPS553221A (en) Signal transmission/reception system
JPS6449454A (en) Multidrop communication system
JPS5769965A (en) Remote station communicating system
JPS5672552A (en) Multiplex transmission system

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees