JPS5586286A - Two-party extension calling system - Google Patents

Two-party extension calling system

Info

Publication number
JPS5586286A
JPS5586286A JP15862478A JP15862478A JPS5586286A JP S5586286 A JPS5586286 A JP S5586286A JP 15862478 A JP15862478 A JP 15862478A JP 15862478 A JP15862478 A JP 15862478A JP S5586286 A JPS5586286 A JP S5586286A
Authority
JP
Japan
Prior art keywords
party
calling
trunk
general
extension
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
JP15862478A
Other languages
Japanese (ja)
Inventor
Mamoru Sugawara
Akihiko Maruko
Yoshihide Tanaka
Tomokiyo Yoshimatsu
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 JP15862478A priority Critical patent/JPS5586286A/en
Publication of JPS5586286A publication Critical patent/JPS5586286A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To offer easily the same services as a general extension by a simple switching system by calling two-party extension subscribers by making a connection between output signal lines of general calling signal trunks by replacing. CONSTITUTION:In general, extension calling signal trunks 11 and 14 send a calling signal to an a'-line side between their output signal lines a' and b', so when trunk 11 is connected to two-party subscriber's line 18, only calling bell 16a is put into operation to call only party A. On the other hand, trunk 14 has output signals a' and b' connected reversely by main distributing board 13 by replacing, and consequently when subscriber's line 18 connects to trunk 14 for calling, only bell 17a is put to work to call only party B. To make a two-party mutual call, connecting two-party trunk 12 to subscriber's line 18 calls both parties A and B at the same time. Consequently, the same services as a general extension can easily be offered.
JP15862478A 1978-12-25 1978-12-25 Two-party extension calling system Pending JPS5586286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15862478A JPS5586286A (en) 1978-12-25 1978-12-25 Two-party extension calling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15862478A JPS5586286A (en) 1978-12-25 1978-12-25 Two-party extension calling system

Publications (1)

Publication Number Publication Date
JPS5586286A true JPS5586286A (en) 1980-06-28

Family

ID=15675767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15862478A Pending JPS5586286A (en) 1978-12-25 1978-12-25 Two-party extension calling system

Country Status (1)

Country Link
JP (1) JPS5586286A (en)

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