JPS54133011A - Identifying system of special common battery subscribers - Google Patents

Identifying system of special common battery subscribers

Info

Publication number
JPS54133011A
JPS54133011A JP4034278A JP4034278A JPS54133011A JP S54133011 A JPS54133011 A JP S54133011A JP 4034278 A JP4034278 A JP 4034278A JP 4034278 A JP4034278 A JP 4034278A JP S54133011 A JPS54133011 A JP S54133011A
Authority
JP
Japan
Prior art keywords
outgoing
subscriber
common battery
trunk
special common
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
JP4034278A
Other languages
Japanese (ja)
Other versions
JPS5722512B2 (en
Inventor
Shige Miyoshi
Takuji Mukaemachi
Ryoichi Himeno
Masataka Moriyama
Kenichi Yasuda
Yoshinari Imamoto
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Hitachi Ltd, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Hitachi Ltd
Priority to JP4034278A priority Critical patent/JPS54133011A/en
Publication of JPS54133011A publication Critical patent/JPS54133011A/en
Publication of JPS5722512B2 publication Critical patent/JPS5722512B2/ja
Granted 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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To make unnecessary the special common battery trunk which identifies the outgoing of the special common battery subscriber and to simplify the private branch of exchange, by identifying the outgoing condition of the special common battery subscriber with subscriber mutual trunk. CONSTITUTION:In performing the identification of outgoing of the special common battery subscriber SUB of the private branch of exchange, the communication current in automatic outgoing is fed to the intra-office trunk IOT via the communication bus 1 of the network NW and the contact b is closed by operating the relay B in the trunk IOT. Further, it is detected that the outgoing of the subscriber SUB is an automatic outgoing. Next, when the subscriber SUB depresses the button S indicating the condition of outgoing and hooks off (automatic outgoing), and communication current flowed in the network NW is interrupted with the diode DO, the operation of the relay B is stopped to open the contact b, and it is detected that the outgoing of the subscriber SUB is a request call with the trunk scanning unit.
JP4034278A 1978-04-07 1978-04-07 Identifying system of special common battery subscribers Granted JPS54133011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4034278A JPS54133011A (en) 1978-04-07 1978-04-07 Identifying system of special common battery subscribers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4034278A JPS54133011A (en) 1978-04-07 1978-04-07 Identifying system of special common battery subscribers

Publications (2)

Publication Number Publication Date
JPS54133011A true JPS54133011A (en) 1979-10-16
JPS5722512B2 JPS5722512B2 (en) 1982-05-13

Family

ID=12577949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4034278A Granted JPS54133011A (en) 1978-04-07 1978-04-07 Identifying system of special common battery subscribers

Country Status (1)

Country Link
JP (1) JPS54133011A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5750167A (en) * 1980-09-11 1982-03-24 Meisei Electric Co Ltd Call identifying system for special common-battery extension
JPS57168565A (en) * 1981-04-09 1982-10-16 Taiko Denki Seisakusho:Kk Special common-battery service system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6697021B2 (en) 2018-04-03 2020-05-20 株式会社フジクラ Endoscope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5750167A (en) * 1980-09-11 1982-03-24 Meisei Electric Co Ltd Call identifying system for special common-battery extension
JPS57168565A (en) * 1981-04-09 1982-10-16 Taiko Denki Seisakusho:Kk Special common-battery service system
JPH0338789B2 (en) * 1981-04-09 1991-06-11 Taiko Denki Seisakusho Kk

Also Published As

Publication number Publication date
JPS5722512B2 (en) 1982-05-13

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