GB440348A - Improvements in or relating to call-recording arrangements in telephone or like systems - Google Patents

Improvements in or relating to call-recording arrangements in telephone or like systems

Info

Publication number
GB440348A
GB440348A GB1883134A GB1883134A GB440348A GB 440348 A GB440348 A GB 440348A GB 1883134 A GB1883134 A GB 1883134A GB 1883134 A GB1883134 A GB 1883134A GB 440348 A GB440348 A GB 440348A
Authority
GB
United Kingdom
Prior art keywords
relay
wire
impulses
relays
junction
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
GB1883134A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1883134A priority Critical patent/GB440348A/en
Priority to NL73938A priority patent/NL45218C/xx
Priority to FR795587D priority patent/FR795587A/fr
Publication of GB440348A publication Critical patent/GB440348A/en
Priority to GB1091537A priority patent/GB493870A/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
    • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
GB1883134A 1934-06-26 1934-06-26 Improvements in or relating to call-recording arrangements in telephone or like systems Expired GB440348A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1883134A GB440348A (en) 1934-06-26 1934-06-26 Improvements in or relating to call-recording arrangements in telephone or like systems
NL73938A NL45218C (enrdf_load_stackoverflow) 1934-06-26 1935-06-19
FR795587D FR795587A (fr) 1934-06-26 1935-06-22 Perfectionnements aux systèmes téléphoniques ou analogues
GB1091537A GB493870A (en) 1934-06-26 1937-04-16 Improvements in or relating to automatic or semi-automatic telephone or like exchange systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1883134A GB440348A (en) 1934-06-26 1934-06-26 Improvements in or relating to call-recording arrangements in telephone or like systems

Publications (1)

Publication Number Publication Date
GB440348A true GB440348A (en) 1935-12-27

Family

ID=40672219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1883134A Expired GB440348A (en) 1934-06-26 1934-06-26 Improvements in or relating to call-recording arrangements in telephone or like systems

Country Status (3)

Country Link
FR (1) FR795587A (enrdf_load_stackoverflow)
GB (1) GB440348A (enrdf_load_stackoverflow)
NL (1) NL45218C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE887223C (de) * 1937-03-10 1953-08-20 Int Standard Electric Corp Schaltungsanordnung zur Bestimmung der Gebuehr fuer Verbindungen in Fernmeldeanlagen, insbesondere Fernsprechanlagen
DE767105C (de) * 1938-04-29 1951-10-31 Siemens & Halske A G Schaltungsanordnung zur Anrechnung von Gebuehren in Fernmelde-anlagen mit Waehlerbetrieb, insbesondere Fernsprechanlagen

Also Published As

Publication number Publication date
FR795587A (fr) 1936-03-17
NL45218C (enrdf_load_stackoverflow) 1939-03-15

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