JPS5689191A - Select signal relaying system - Google Patents

Select signal relaying system

Info

Publication number
JPS5689191A
JPS5689191A JP16653679A JP16653679A JPS5689191A JP S5689191 A JPS5689191 A JP S5689191A JP 16653679 A JP16653679 A JP 16653679A JP 16653679 A JP16653679 A JP 16653679A JP S5689191 A JPS5689191 A JP S5689191A
Authority
JP
Japan
Prior art keywords
signal
central office
connection
trunk
telephone set
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
JP16653679A
Other languages
Japanese (ja)
Other versions
JPS5846915B2 (en
Inventor
Masato Fujisawa
Kiyoshi Shibuya
Yasuo Satake
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 JP16653679A priority Critical patent/JPS5846915B2/en
Publication of JPS5689191A publication Critical patent/JPS5689191A/en
Publication of JPS5846915B2 publication Critical patent/JPS5846915B2/en
Expired 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)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To make an element unnecessary which controls transmission of a PB signal to the central office, by providing a terminal for PB signal central office connection and a terminal for DP signal central office connection in a PB register trunk and by distinguishing connection terminals according to the selecting signal form of the trunk line. CONSTITUTION:In case of originating and connection from extension telephone set EXT to PB signal central office PBCO, the control device acquires idle central office trunk COOGT. Then, transmission-side terminal 3 and receiving-side terminal 3' are connected to receiving-side terminal 5' and transmission-side terminal 5 for PB signal trunk line connection of the PB register trunk by a pair of channels in the time division network HSW. Therefore, the PB signal transmitted from extension telephone set EXT is transmitted directly to the trunk line. Further, in case of originating and connection from extension telephone set EXT to DP signal central office DPCO, DP signal central office connection terminals 6 and 6' are used to prevent the PB signal transmitted from extension telephone set EXT from flowing to the trunk line.
JP16653679A 1979-12-21 1979-12-21 Selective signal relay method Expired JPS5846915B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16653679A JPS5846915B2 (en) 1979-12-21 1979-12-21 Selective signal relay method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16653679A JPS5846915B2 (en) 1979-12-21 1979-12-21 Selective signal relay method

Publications (2)

Publication Number Publication Date
JPS5689191A true JPS5689191A (en) 1981-07-20
JPS5846915B2 JPS5846915B2 (en) 1983-10-19

Family

ID=15833102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16653679A Expired JPS5846915B2 (en) 1979-12-21 1979-12-21 Selective signal relay method

Country Status (1)

Country Link
JP (1) JPS5846915B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0329553A (en) * 1989-06-27 1991-02-07 Matsushita Electric Works Ltd Telephone exchange

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0329553A (en) * 1989-06-27 1991-02-07 Matsushita Electric Works Ltd Telephone exchange

Also Published As

Publication number Publication date
JPS5846915B2 (en) 1983-10-19

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