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ZA816705B - Subscriber connection circuit for coin operated telephones - Google Patents

Subscriber connection circuit for coin operated telephones

Info

Publication number
ZA816705B
ZA816705B ZA816705A ZA816705A ZA816705B ZA 816705 B ZA816705 B ZA 816705B ZA 816705 A ZA816705 A ZA 816705A ZA 816705 A ZA816705 A ZA 816705A ZA 816705 B ZA816705 B ZA 816705B
Authority
ZA
South Africa
Prior art keywords
connection circuit
subscriber connection
coin operated
operated telephones
telephones
Prior art date
Application number
ZA816705A
Inventor
Horst Kopetzky
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of ZA816705B publication Critical patent/ZA816705B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • 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
    • H04M17/023—Circuit arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
ZA816705A 1980-09-29 1981-09-28 Subscriber connection circuit for coin operated telephones ZA816705B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3036657A DE3036657C2 (en) 1980-09-29 1980-09-29 Subscriber connection circuit for coin-operated telephones with switching means for determining the individual operating states to be monitored

Publications (1)

Publication Number Publication Date
ZA816705B true ZA816705B (en) 1982-09-29

Family

ID=6113103

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA816705A ZA816705B (en) 1980-09-29 1981-09-28 Subscriber connection circuit for coin operated telephones

Country Status (2)

Country Link
DE (1) DE3036657C2 (en)
ZA (1) ZA816705B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547880C2 (en) * 1975-10-25 1981-09-24 Standard Elektrik Lorenz Ag, 7000 Stuttgart Circuit arrangement for recognizing the operating states of a subscriber line and for connecting and disabling calls in telephone exchanges
CH634187A5 (en) * 1978-10-10 1983-01-14 Sodeco Compteurs De Geneve Detector circuit for telephone networks

Also Published As

Publication number Publication date
DE3036657C2 (en) 1985-09-05
DE3036657A1 (en) 1982-06-16

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