GB1024196A - Circuit arrangement for pabxs with key-dialling and tie-lines to other pabxs - Google Patents

Circuit arrangement for pabxs with key-dialling and tie-lines to other pabxs

Info

Publication number
GB1024196A
GB1024196A GB425963A GB425963A GB1024196A GB 1024196 A GB1024196 A GB 1024196A GB 425963 A GB425963 A GB 425963A GB 425963 A GB425963 A GB 425963A GB 1024196 A GB1024196 A GB 1024196A
Authority
GB
United Kingdom
Prior art keywords
pabxs
dialling
tie
key
link
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.)
Expired
Application number
GB425963A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB425963A priority Critical patent/GB1024196A/en
Publication of GB1024196A publication Critical patent/GB1024196A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

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

Abstract

1,024,196. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. (Standard Elektrik Lorenz A.G.). Feb. 1, 1963, No. 4259/63. Heading H4K. In a P.A.B.X. having key-dialling, and tieline facilities to other P.A.B.X.'s, the register tests a seized tie-line link and itself connects dialling tone if the link does not have a dialling tone facility. Such a link is marked by interchanging the line wires so that the resulting reversal of potential causes the operation of a test relay in the register.
GB425963A 1963-02-01 1963-02-01 Circuit arrangement for pabxs with key-dialling and tie-lines to other pabxs Expired GB1024196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB425963A GB1024196A (en) 1963-02-01 1963-02-01 Circuit arrangement for pabxs with key-dialling and tie-lines to other pabxs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB425963A GB1024196A (en) 1963-02-01 1963-02-01 Circuit arrangement for pabxs with key-dialling and tie-lines to other pabxs

Publications (1)

Publication Number Publication Date
GB1024196A true GB1024196A (en) 1966-03-30

Family

ID=9773741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB425963A Expired GB1024196A (en) 1963-02-01 1963-02-01 Circuit arrangement for pabxs with key-dialling and tie-lines to other pabxs

Country Status (1)

Country Link
GB (1) GB1024196A (en)

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