JPS5345107A - Trunk connection control system - Google Patents

Trunk connection control system

Info

Publication number
JPS5345107A
JPS5345107A JP11928076A JP11928076A JPS5345107A JP S5345107 A JPS5345107 A JP S5345107A JP 11928076 A JP11928076 A JP 11928076A JP 11928076 A JP11928076 A JP 11928076A JP S5345107 A JPS5345107 A JP S5345107A
Authority
JP
Japan
Prior art keywords
control system
connection control
trunk connection
extension
trunk
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
JP11928076A
Other languages
Japanese (ja)
Inventor
Kikuo Oshima
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
Original Assignee
Hitachi 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 filed Critical Hitachi Ltd
Priority to JP11928076A priority Critical patent/JPS5345107A/en
Publication of JPS5345107A publication Critical patent/JPS5345107A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • 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 prevent a double figure reception as well as to enhance the services to the PB extension telephone set by cutting off the PB extension from the extension side of the trunk.
JP11928076A 1976-10-06 1976-10-06 Trunk connection control system Pending JPS5345107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11928076A JPS5345107A (en) 1976-10-06 1976-10-06 Trunk connection control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11928076A JPS5345107A (en) 1976-10-06 1976-10-06 Trunk connection control system

Publications (1)

Publication Number Publication Date
JPS5345107A true JPS5345107A (en) 1978-04-22

Family

ID=14757463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11928076A Pending JPS5345107A (en) 1976-10-06 1976-10-06 Trunk connection control system

Country Status (1)

Country Link
JP (1) JPS5345107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833752A (en) * 1971-09-03 1973-05-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833752A (en) * 1971-09-03 1973-05-12
JPS5525526B2 (en) * 1971-09-03 1980-07-07

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