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JPS5563163A - Trunk selection system for private branch exchange of decentralized attendant board system - Google Patents

Trunk selection system for private branch exchange of decentralized attendant board system

Info

Publication number
JPS5563163A
JPS5563163A JP13700278A JP13700278A JPS5563163A JP S5563163 A JPS5563163 A JP S5563163A JP 13700278 A JP13700278 A JP 13700278A JP 13700278 A JP13700278 A JP 13700278A JP S5563163 A JPS5563163 A JP S5563163A
Authority
JP
Japan
Prior art keywords
trunk
cbt
selection
decentralized
trunk selection
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
JP13700278A
Other languages
Japanese (ja)
Inventor
Shoji Machida
Mikio Oki
Tsuneo Arai
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.)
Meisei Electric Co Ltd
Original Assignee
Meisei 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 Meisei Electric Co Ltd filed Critical Meisei Electric Co Ltd
Priority to JP13700278A priority Critical patent/JPS5563163A/en
Publication of JPS5563163A publication Critical patent/JPS5563163A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To realize the formation of a trunk selection circuit with an extremely rational circuit constitution by limiting the selection of the trunk groups by means the trunk selection route at the transfer connection time. CONSTITUTION:The link to connect call-back trunk CBT and the extension subscriber is controlled to be used again at the transfer connection time for the private branch exchange of the decentralized attendant board system. In this case, switching relay TG for the trunk selection route is provided within trunk CBT. With this relay TG, the trunk selection route at the call-back connection time is used in switch between the trunk selection route of the bothway main wire trunk which starts trunk CBT and the trunk selection route of trunk CBT. Thus the trunk selection circuit can be formed with an extremely rational circuit constitution.
JP13700278A 1978-11-07 1978-11-07 Trunk selection system for private branch exchange of decentralized attendant board system Pending JPS5563163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13700278A JPS5563163A (en) 1978-11-07 1978-11-07 Trunk selection system for private branch exchange of decentralized attendant board system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13700278A JPS5563163A (en) 1978-11-07 1978-11-07 Trunk selection system for private branch exchange of decentralized attendant board system

Publications (1)

Publication Number Publication Date
JPS5563163A true JPS5563163A (en) 1980-05-13

Family

ID=15188494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13700278A Pending JPS5563163A (en) 1978-11-07 1978-11-07 Trunk selection system for private branch exchange of decentralized attendant board system

Country Status (1)

Country Link
JP (1) JPS5563163A (en)

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