JPS57145467A - Calling state separating system - Google Patents

Calling state separating system

Info

Publication number
JPS57145467A
JPS57145467A JP3071381A JP3071381A JPS57145467A JP S57145467 A JPS57145467 A JP S57145467A JP 3071381 A JP3071381 A JP 3071381A JP 3071381 A JP3071381 A JP 3071381A JP S57145467 A JPS57145467 A JP S57145467A
Authority
JP
Japan
Prior art keywords
terminals
circuits
state
terminal
trunk device
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.)
Pending
Application number
JP3071381A
Other languages
Japanese (ja)
Inventor
Takeshi Sawamoto
Tomio Oda
Yukio Honda
Noriteru Shinagawa
Shinichi Komatsu
Mikio Suzuki
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.)
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric Co Ltd
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 Fujitsu Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP3071381A priority Critical patent/JPS57145467A/en
Publication of JPS57145467A publication Critical patent/JPS57145467A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To simplify the procedure of connection, by eliminating the redundant part of a channel which is connected to a multiterminal trunk device and separating the state to make call of each terminal of the said trunk device into a single call. CONSTITUTION:The circuits PS2-PSi which transmit the state of the 1st terminal circuit to other terminals T2-Ti plus circuits CR2-CRi which read the states of terminals T2-Ti are provided to a signal circuit S1 of the 1st terminal T1. At the same time, the circuits CS2-CSi which convey the state of own terminal plus the circuits PR2-PRi which read the state of the terminal T1 are provided to signal circuits S2-Si of the 2nd to the final terminals T2-Ti. Then the state of connection is separated to make call of the channels connected to the terminals T1-Ti into a single call for each of terminals T1-Ti to perform the control of calls. In such way, the redundant part is eliminated from the channel connected to a multiterminal trunk device.
JP3071381A 1981-03-04 1981-03-04 Calling state separating system Pending JPS57145467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3071381A JPS57145467A (en) 1981-03-04 1981-03-04 Calling state separating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3071381A JPS57145467A (en) 1981-03-04 1981-03-04 Calling state separating system

Publications (1)

Publication Number Publication Date
JPS57145467A true JPS57145467A (en) 1982-09-08

Family

ID=12311279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3071381A Pending JPS57145467A (en) 1981-03-04 1981-03-04 Calling state separating system

Country Status (1)

Country Link
JP (1) JPS57145467A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555735A (en) * 1978-06-30 1980-01-16 Mitsubishi Heavy Ind Ltd Treating method for waste water containing hexavalent chromium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555735A (en) * 1978-06-30 1980-01-16 Mitsubishi Heavy Ind Ltd Treating method for waste water containing hexavalent chromium

Similar Documents

Publication Publication Date Title
GB1521127A (en) Telecommunication systems
JPS57145467A (en) Calling state separating system
JPS55134568A (en) Data collector
JPS5654158A (en) Control system for call waiting
JPS5547768A (en) Facsimile callout system
JPS5728494A (en) Private branch of exchange system
JPS5752257A (en) Calling control system
JPS5571344A (en) Diagnosing system for remote control time division switchboard
JPS5781758A (en) Signal transmitting system of switchboard
JPS5496313A (en) Signal switching system
JPS56160168A (en) Exchange system
JPS56119564A (en) Key telephone system
JPS5744390A (en) Priority call controller of multistation inter-phone
JPS5779755A (en) Control system for attendant board
JPS5723370A (en) Alarm system using community antenna televison circuit
JPS57136849A (en) Remote subscriber line testing system
JPS5683148A (en) Radio system for administration of diaster protection
JPS5630355A (en) Call selection system of terminal equipment
JPS5742259A (en) Test system for outgoing trunk connection
JPS5610765A (en) Automatic answer signal system of communication terminal equipment
JPS56131249A (en) Mischievous call recording system
JPS57204670A (en) Call monitoring system
JPS56115067A (en) Channel continuity test system
JPS5797292A (en) Connector system for a number of information transfer
JPS57133749A (en) Connecting system for exclusive line