FR781719A - Tax announcer for telephone sets - Google Patents

Tax announcer for telephone sets

Info

Publication number
FR781719A
FR781719A FR781719DA FR781719A FR 781719 A FR781719 A FR 781719A FR 781719D A FR781719D A FR 781719DA FR 781719 A FR781719 A FR 781719A
Authority
FR
France
Prior art keywords
announcer
tax
telephone sets
telephone
sets
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
Other languages
French (fr)
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.)
FAVAG FABRIQUE D APP ELECTR S
Original Assignee
FAVAG FABRIQUE D APP ELECTR S
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 FAVAG FABRIQUE D APP ELECTR S filed Critical FAVAG FABRIQUE D APP ELECTR S
Application granted granted Critical
Publication of FR781719A publication Critical patent/FR781719A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • 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
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
FR781719D 1933-11-23 1934-11-23 Tax announcer for telephone sets Expired FR781719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE781719X 1933-11-23

Publications (1)

Publication Number Publication Date
FR781719A true FR781719A (en) 1935-05-21

Family

ID=6692195

Family Applications (1)

Application Number Title Priority Date Filing Date
FR781719D Expired FR781719A (en) 1933-11-23 1934-11-23 Tax announcer for telephone sets

Country Status (2)

Country Link
FR (1) FR781719A (en)
NL (1) NL40094C (en)

Also Published As

Publication number Publication date
NL40094C (en)

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