GB1362707A - Control of operation of a system - Google Patents

Control of operation of a system

Info

Publication number
GB1362707A
GB1362707A GB3538571A GB3538571A GB1362707A GB 1362707 A GB1362707 A GB 1362707A GB 3538571 A GB3538571 A GB 3538571A GB 3538571 A GB3538571 A GB 3538571A GB 1362707 A GB1362707 A GB 1362707A
Authority
GB
United Kingdom
Prior art keywords
line
transistor
common
control
transistors
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
GB3538571A
Other languages
English (en)
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.)
AUSTRALIA POSTMASTER GENERALS
Original Assignee
AUSTRALIA POSTMASTER GENERALS
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 AUSTRALIA POSTMASTER GENERALS filed Critical AUSTRALIA POSTMASTER GENERALS
Publication of GB1362707A publication Critical patent/GB1362707A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/32—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges
    • H04M3/323—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for lines between exchanges for the arrangements providing the connection (test connection, test call, call simulation)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • 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
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Safety Devices In Control Systems (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Logic Circuits (AREA)
GB3538571A 1970-07-30 1971-07-28 Control of operation of a system Expired GB1362707A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU31550/71A AU466670B2 (en) 1970-07-30 1970-07-30 Control of operation of a system
AUPA203570 1970-07-30

Publications (1)

Publication Number Publication Date
GB1362707A true GB1362707A (en) 1974-08-07

Family

ID=25621849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3538571A Expired GB1362707A (en) 1970-07-30 1971-07-28 Control of operation of a system

Country Status (5)

Country Link
US (1) US3745418A (enExample)
AU (1) AU466670B2 (enExample)
DE (1) DE2136516A1 (enExample)
FR (1) FR2099405A5 (enExample)
GB (1) GB1362707A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020397A (en) * 1974-09-25 1977-04-26 Westinghouse Electric Corporation Parallel transistor protection circuit

Also Published As

Publication number Publication date
AU466670B2 (en) 1975-11-06
AU3155071A (en) 1973-01-25
FR2099405A5 (enExample) 1972-03-10
US3745418A (en) 1973-07-10
DE2136516A1 (de) 1972-03-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee