GB1570969A - Automatic isolating device for telephone junctors - Google Patents

Automatic isolating device for telephone junctors Download PDF

Info

Publication number
GB1570969A
GB1570969A GB1843677A GB1843677A GB1570969A GB 1570969 A GB1570969 A GB 1570969A GB 1843677 A GB1843677 A GB 1843677A GB 1843677 A GB1843677 A GB 1843677A GB 1570969 A GB1570969 A GB 1570969A
Authority
GB
United Kingdom
Prior art keywords
junctors
signal
scanning
isolating
cyclical
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
GB1843677A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1570969A publication Critical patent/GB1570969A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
GB1843677A 1976-05-07 1977-05-03 Automatic isolating device for telephone junctors Expired GB1570969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7613670A FR2350747A1 (fr) 1976-05-07 1976-05-07 Dispositif d'isolement automatique de joncteurs telephoniques

Publications (1)

Publication Number Publication Date
GB1570969A true GB1570969A (en) 1980-07-09

Family

ID=9172807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1843677A Expired GB1570969A (en) 1976-05-07 1977-05-03 Automatic isolating device for telephone junctors

Country Status (4)

Country Link
BE (1) BE854245A (enExample)
ES (1) ES458491A1 (enExample)
FR (1) FR2350747A1 (enExample)
GB (1) GB1570969A (enExample)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920921A (en) * 1974-12-13 1975-11-18 Gte Automatic Electric Lab Inc Line equipment for scan and control system for synchronized pcm digital switching exchange

Also Published As

Publication number Publication date
FR2350747B1 (enExample) 1982-04-02
BE854245A (fr) 1977-11-04
ES458491A1 (es) 1978-04-01
FR2350747A1 (fr) 1977-12-02

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee