FR2350747A1 - AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS - Google Patents

AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS

Info

Publication number
FR2350747A1
FR2350747A1 FR7613670A FR7613670A FR2350747A1 FR 2350747 A1 FR2350747 A1 FR 2350747A1 FR 7613670 A FR7613670 A FR 7613670A FR 7613670 A FR7613670 A FR 7613670A FR 2350747 A1 FR2350747 A1 FR 2350747A1
Authority
FR
France
Prior art keywords
isolation device
automatic isolation
telephone trunks
trunks
telephone
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.)
Granted
Application number
FR7613670A
Other languages
French (fr)
Other versions
FR2350747B1 (en
Inventor
Augustin Lejay
Leopold Paul Verbist
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications SA
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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR7613670A priority Critical patent/FR2350747A1/en
Priority to GB1843677A priority patent/GB1570969A/en
Priority to BE2055879A priority patent/BE854245A/en
Priority to ES458491A priority patent/ES458491A1/en
Publication of FR2350747A1 publication Critical patent/FR2350747A1/en
Application granted granted Critical
Publication of FR2350747B1 publication Critical patent/FR2350747B1/fr
Granted 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)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Telephone Function (AREA)
FR7613670A 1976-05-07 1976-05-07 AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS Granted FR2350747A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7613670A FR2350747A1 (en) 1976-05-07 1976-05-07 AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS
GB1843677A GB1570969A (en) 1976-05-07 1977-05-03 Automatic isolating device for telephone junctors
BE2055879A BE854245A (en) 1976-05-07 1977-05-04 AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS
ES458491A ES458491A1 (en) 1976-05-07 1977-05-05 Automatic isolating device for telephone junctors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7613670A FR2350747A1 (en) 1976-05-07 1976-05-07 AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS

Publications (2)

Publication Number Publication Date
FR2350747A1 true FR2350747A1 (en) 1977-12-02
FR2350747B1 FR2350747B1 (en) 1982-04-02

Family

ID=9172807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7613670A Granted FR2350747A1 (en) 1976-05-07 1976-05-07 AUTOMATIC ISOLATION DEVICE FOR TELEPHONE TRUNKS

Country Status (4)

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

Citations (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

Patent Citations (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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NO008979/72 *
NV1225/78 *

Also Published As

Publication number Publication date
BE854245A (en) 1977-11-04
GB1570969A (en) 1980-07-09
FR2350747B1 (en) 1982-04-02
ES458491A1 (en) 1978-04-01

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Legal Events

Date Code Title Description
ST Notification of lapse