IT1027865B - Circuito per controllare l impie go di linea in particolare una linea telefonica - Google Patents

Circuito per controllare l impie go di linea in particolare una linea telefonica

Info

Publication number
IT1027865B
IT1027865B IT3078974A IT3078974A IT1027865B IT 1027865 B IT1027865 B IT 1027865B IT 3078974 A IT3078974 A IT 3078974A IT 3078974 A IT3078974 A IT 3078974A IT 1027865 B IT1027865 B IT 1027865B
Authority
IT
Italy
Prior art keywords
line
checking
circuit
implement
telephone line
Prior art date
Application number
IT3078974A
Other languages
English (en)
Italian (it)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT1027865B publication Critical patent/IT1027865B/it

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)
  • Meter Arrangements (AREA)
  • Interface Circuits In Exchanges (AREA)
IT3078974A 1974-02-01 1974-12-20 Circuito per controllare l impie go di linea in particolare una linea telefonica IT1027865B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43893074A 1974-02-01 1974-02-01

Publications (1)

Publication Number Publication Date
IT1027865B true IT1027865B (it) 1978-12-20

Family

ID=23742623

Family Applications (1)

Application Number Title Priority Date Filing Date
IT3078974A IT1027865B (it) 1974-02-01 1974-12-20 Circuito per controllare l impie go di linea in particolare una linea telefonica

Country Status (4)

Country Link
JP (1) JPS50119509A (no)
DE (1) DE2460991A1 (no)
FR (1) FR2260237A1 (no)
IT (1) IT1027865B (no)

Also Published As

Publication number Publication date
JPS50119509A (no) 1975-09-19
FR2260237B1 (no) 1978-11-24
DE2460991A1 (de) 1975-08-14
FR2260237A1 (en) 1975-08-29

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