GB2004441A - Circuit arrangement for detecting the use of telephone extensions in automatic private branch telephone exchanges with a plurality of extensions - Google Patents

Circuit arrangement for detecting the use of telephone extensions in automatic private branch telephone exchanges with a plurality of extensions

Info

Publication number
GB2004441A
GB2004441A GB7836519A GB7836519A GB2004441A GB 2004441 A GB2004441 A GB 2004441A GB 7836519 A GB7836519 A GB 7836519A GB 7836519 A GB7836519 A GB 7836519A GB 2004441 A GB2004441 A GB 2004441A
Authority
GB
United Kingdom
Prior art keywords
extensions
telephone
detecting
circuit arrangement
private branch
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
GB7836519A
Other versions
GB2004441B (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.)
Sodeco Saia AG
Societe des Compteurs de Geneve SODECO
Original Assignee
Sodeco Saia AG
Societe des Compteurs de Geneve SODECO
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 Sodeco Saia AG, Societe des Compteurs de Geneve SODECO filed Critical Sodeco Saia AG
Publication of GB2004441A publication Critical patent/GB2004441A/en
Application granted granted Critical
Publication of GB2004441B publication Critical patent/GB2004441B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/34—Charging, billing or metering arrangements for private branch exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Alarm Systems (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephone Function (AREA)
  • Telephone Set Structure (AREA)

Abstract

A circuit arrangement for detecting the use of telephone extensions in an automatic private branch exchange 9 with a plurality of internal lines 5 to 8, wherein an identifying signal is fed into the subscriber line 13 and, after passing the exchange 9, is derived from one of the internal lines 5 to 8, to indicate for storage and analysis the extension which set up or took over the telephone connection with an outside subscriber. The arrangement also includes a safeguard means 15 for detecting and displaying the occurrence of faults on any of the internal lines 5 to 8. <IMAGE>
GB7836519A 1977-09-14 1978-09-12 Circuit arrangements for detecting the use of telephone extensions in automatic private branch telephone exchanges with a plurality of extensions Expired GB2004441B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1120977A CH608153A5 (en) 1977-09-14 1977-09-14

Publications (2)

Publication Number Publication Date
GB2004441A true GB2004441A (en) 1979-03-28
GB2004441B GB2004441B (en) 1982-01-06

Family

ID=4371140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836519A Expired GB2004441B (en) 1977-09-14 1978-09-12 Circuit arrangements for detecting the use of telephone extensions in automatic private branch telephone exchanges with a plurality of extensions

Country Status (9)

Country Link
AT (1) AT376091B (en)
BE (1) BE870454A (en)
CH (1) CH608153A5 (en)
DE (1) DE2745554C3 (en)
FR (1) FR2403698A2 (en)
GB (1) GB2004441B (en)
IT (1) IT7827586A0 (en)
NO (1) NO145861C (en)
SE (1) SE430368B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6508310A (en) * 1965-06-29 1966-12-30
FR1528080A (en) * 1967-04-28 1968-06-07 Constr Telephoniques Identity search for circuits in a telephone exchange
SE377022B (en) * 1970-06-10 1975-06-16 Commw Of Australia

Also Published As

Publication number Publication date
AT376091B (en) 1984-10-10
CH608153A5 (en) 1978-12-15
FR2403698B2 (en) 1983-11-25
DE2745554B2 (en) 1979-07-26
DE2745554A1 (en) 1979-03-15
GB2004441B (en) 1982-01-06
DE2745554C3 (en) 1980-04-10
SE7809605L (en) 1979-03-15
NO145861B (en) 1982-03-01
FR2403698A2 (en) 1979-04-13
SE430368B (en) 1983-11-07
IT7827586A0 (en) 1978-09-13
ATA630678A (en) 1984-02-15
BE870454A (en) 1979-01-02
NO782475L (en) 1979-03-15
NO145861C (en) 1982-06-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee