GB712508A - Automatic toll ticketing telephone systems - Google Patents

Automatic toll ticketing telephone systems

Info

Publication number
GB712508A
GB712508A GB4284/52A GB428452A GB712508A GB 712508 A GB712508 A GB 712508A GB 4284/52 A GB4284/52 A GB 4284/52A GB 428452 A GB428452 A GB 428452A GB 712508 A GB712508 A GB 712508A
Authority
GB
United Kingdom
Prior art keywords
relay
class
line
director
call
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
GB4284/52A
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Publication of GB712508A publication Critical patent/GB712508A/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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
GB4284/52A 1951-03-28 1952-02-18 Automatic toll ticketing telephone systems Expired GB712508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US712508XA 1951-03-28 1951-03-28

Publications (1)

Publication Number Publication Date
GB712508A true GB712508A (en) 1954-07-28

Family

ID=22100189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4284/52A Expired GB712508A (en) 1951-03-28 1952-02-18 Automatic toll ticketing telephone systems

Country Status (2)

Country Link
BE (1) BE509959A (enrdf_load_stackoverflow)
GB (1) GB712508A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE509959A (enrdf_load_stackoverflow)

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