GB902172A - Electrical identification system - Google Patents

Electrical identification system

Info

Publication number
GB902172A
GB902172A GB4115358A GB4115358A GB902172A GB 902172 A GB902172 A GB 902172A GB 4115358 A GB4115358 A GB 4115358A GB 4115358 A GB4115358 A GB 4115358A GB 902172 A GB902172 A GB 902172A
Authority
GB
United Kingdom
Prior art keywords
identification
terminals
line
terminal
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
GB4115358A
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.)
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
Publication of GB902172A publication Critical patent/GB902172A/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
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB4115358A 1957-12-20 1958-12-19 Electrical identification system Expired GB902172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE37761 1957-12-20

Publications (1)

Publication Number Publication Date
GB902172A true GB902172A (en) 1962-07-25

Family

ID=3840085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4115358A Expired GB902172A (en) 1957-12-20 1958-12-19 Electrical identification system

Country Status (5)

Country Link
BE (1) BE563382A (fr)
CH (1) CH376152A (fr)
DE (1) DE1084778B (fr)
FR (1) FR1211297A (fr)
GB (1) GB902172A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1215213B (de) * 1960-10-01 1966-04-28 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur Erkennung und Markierung der jeweils rufenden von gruppenweise zusammengefassten Leitungen, insbesondere Teilnehmeranschlussleitungen, in Fernsprechvermittlungsanlagen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955786C (de) * 1954-01-14 1957-01-10 Standard Elek K Ag Schaltungsanordnung zur Indentifizierung von Leitungen
DE1012334B (de) * 1956-06-15 1957-07-18 Standard Elektrik Ag Schaltungsanordnung zur Identifizierung von gruppenweise aufgeteilten Leitungen

Also Published As

Publication number Publication date
BE563382A (fr)
DE1084778B (de) 1960-07-07
CH376152A (fr) 1964-03-31
FR1211297A (fr) 1960-03-15

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