JPS5444406A - Relay system for selection signal - Google Patents

Relay system for selection signal

Info

Publication number
JPS5444406A
JPS5444406A JP11095377A JP11095377A JPS5444406A JP S5444406 A JPS5444406 A JP S5444406A JP 11095377 A JP11095377 A JP 11095377A JP 11095377 A JP11095377 A JP 11095377A JP S5444406 A JPS5444406 A JP S5444406A
Authority
JP
Japan
Prior art keywords
ext
main line
pbrst
delivered
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.)
Granted
Application number
JP11095377A
Other languages
Japanese (ja)
Other versions
JPS5750119B2 (en
Inventor
Yasuo Satake
Hajime Ito
Kiyoshi Shibuya
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP11095377A priority Critical patent/JPS5444406A/en
Publication of JPS5444406A publication Critical patent/JPS5444406A/en
Publication of JPS5750119B2 publication Critical patent/JPS5750119B2/ja
Granted 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)

Abstract

PURPOSE:To prevent the misconnection at exchanging stations and to reduce the amount of hardware, by detecting the start finish signal from the main line and making heard it to directly the caller in PBX. CONSTITUTION:At the calling of extension telephone set EXT, EXT is connected to the terminal A of the PB register sender trunk PBRST and the dial tone trunk DTT is connected to the terminal B of PBRST with the control unit CC, dial tone is delivered to EXT, the specific number for main line calling from EXT is delivered to EXT, the specific number of main line calling from EXT is delivered to the CC via PBRST, and CC catches the main line trunk COOGT and the communication path 3 and delivers start signal to the exchanging station. Further, when the start finish signal is returned from the exchanging station, it is delivered to EXT via COOGT, train 3, PBRST and train 1. Thus, EXT performs desired call to the main line CO.
JP11095377A 1977-09-14 1977-09-14 Relay system for selection signal Granted JPS5444406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11095377A JPS5444406A (en) 1977-09-14 1977-09-14 Relay system for selection signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11095377A JPS5444406A (en) 1977-09-14 1977-09-14 Relay system for selection signal

Publications (2)

Publication Number Publication Date
JPS5444406A true JPS5444406A (en) 1979-04-07
JPS5750119B2 JPS5750119B2 (en) 1982-10-26

Family

ID=14548715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11095377A Granted JPS5444406A (en) 1977-09-14 1977-09-14 Relay system for selection signal

Country Status (1)

Country Link
JP (1) JPS5444406A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48103105A (en) * 1972-04-10 1973-12-25
JPS522106A (en) * 1975-06-24 1977-01-08 Hitachi Ltd Loop around connection control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48103105A (en) * 1972-04-10 1973-12-25
JPS522106A (en) * 1975-06-24 1977-01-08 Hitachi Ltd Loop around connection control system

Also Published As

Publication number Publication date
JPS5750119B2 (en) 1982-10-26

Similar Documents

Publication Publication Date Title
JPS56129469A (en) Transfer system of incoming call
GB1283968A (en) Switching systems
JPS5444406A (en) Relay system for selection signal
ES458626A1 (en) Means for identifying subscriber lines
JPS5664524A (en) Telephone installed on travelling object
JPS56147545A (en) Automatic telephone transfer device
GB1041329A (en) An intrinsic safety telephone device
JPS57190493A (en) Private branch exchange system
JPS5689162A (en) Number change guide system
JPS5690670A (en) Communication system
JPS56152393A (en) Multiparty radiotelephony system
JPS54504A (en) Telephone set of number delivery
JPS5487105A (en) Connection circuit for dispatching telephone
JPS5776940A (en) Pocket bell calling and responsing device
JPS5492103A (en) Malicious preventing method
JPS5547763A (en) Electronic call meter unit
JPS55136736A (en) Paging system
JPS5750163A (en) Call pickup system
JPS5683168A (en) Multiconnecting system for automatic telephone exchanger
JPS5776990A (en) Restriction system for earlier dialing of trunk line call
JPS55125756A (en) Connection test system for automatic exchanger
GB1077478A (en) Improvements in or relating to telecommunications systems subscriber's sets
JPS5718158A (en) Telephone substitute calling method
JPS56128060A (en) Calling device
JPS55136763A (en) Connection system to telephone set changed for number