JPS51115712A - Call detection method in automatic telephone exchange - Google Patents

Call detection method in automatic telephone exchange

Info

Publication number
JPS51115712A
JPS51115712A JP3974175A JP3974175A JPS51115712A JP S51115712 A JPS51115712 A JP S51115712A JP 3974175 A JP3974175 A JP 3974175A JP 3974175 A JP3974175 A JP 3974175A JP S51115712 A JPS51115712 A JP S51115712A
Authority
JP
Japan
Prior art keywords
telephone exchange
detection method
call detection
automatic telephone
call
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
JP3974175A
Other languages
Japanese (ja)
Other versions
JPS5820514B2 (en
Inventor
Teruo Yokoo
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3974175A priority Critical patent/JPS5820514B2/en
Publication of JPS51115712A publication Critical patent/JPS51115712A/en
Publication of JPS5820514B2 publication Critical patent/JPS5820514B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/72—Finding out and indicating number of calling subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To eliminate a subscriber line circuit in the telephone exchange of common control method.
JP3974175A 1975-04-03 1975-04-03 Hatsuko Kenshiyutsuhoshiki Expired JPS5820514B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3974175A JPS5820514B2 (en) 1975-04-03 1975-04-03 Hatsuko Kenshiyutsuhoshiki

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3974175A JPS5820514B2 (en) 1975-04-03 1975-04-03 Hatsuko Kenshiyutsuhoshiki

Publications (2)

Publication Number Publication Date
JPS51115712A true JPS51115712A (en) 1976-10-12
JPS5820514B2 JPS5820514B2 (en) 1983-04-23

Family

ID=12561377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3974175A Expired JPS5820514B2 (en) 1975-04-03 1975-04-03 Hatsuko Kenshiyutsuhoshiki

Country Status (1)

Country Link
JP (1) JPS5820514B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05344547A (en) * 1992-06-05 1993-12-24 Nec Commun Syst Ltd Call detection control system
JPH0670014A (en) * 1992-08-24 1994-03-11 Nec Commun Syst Ltd Subscriber circuit switching control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05344547A (en) * 1992-06-05 1993-12-24 Nec Commun Syst Ltd Call detection control system
JPH0670014A (en) * 1992-08-24 1994-03-11 Nec Commun Syst Ltd Subscriber circuit switching control system

Also Published As

Publication number Publication date
JPS5820514B2 (en) 1983-04-23

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