DK0727898T3 - - Google Patents

Info

Publication number
DK0727898T3
DK0727898T3 DK95108824.4T DK95108824T DK0727898T3 DK 0727898 T3 DK0727898 T3 DK 0727898T3 DK 95108824 T DK95108824 T DK 95108824T DK 0727898 T3 DK0727898 T3 DK 0727898T3
Authority
DK
Denmark
Application number
DK95108824.4T
Other languages
Danish (da)
Inventor
Thomas Seitz
Urs Falk
Original Assignee
Landis & Gyr Tech Innovat
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 Landis & Gyr Tech Innovat filed Critical Landis & Gyr Tech Innovat
Application granted granted Critical
Publication of DK0727898T3 publication Critical patent/DK0727898T3/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • 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 Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Near-Field Transmission Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
DK95108824.4T 1995-02-10 1995-06-08 DK0727898T3 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH39195 1995-02-10

Publications (1)

Publication Number Publication Date
DK0727898T3 true DK0727898T3 (enrdf_load_stackoverflow) 1997-03-17

Family

ID=4185948

Family Applications (1)

Application Number Title Priority Date Filing Date
DK95108824.4T DK0727898T3 (enrdf_load_stackoverflow) 1995-02-10 1995-06-08

Country Status (10)

Country Link
EP (1) EP0727898B1 (enrdf_load_stackoverflow)
AR (1) AR000900A1 (enrdf_load_stackoverflow)
AT (1) ATE143550T1 (enrdf_load_stackoverflow)
DE (1) DE59500025D1 (enrdf_load_stackoverflow)
DK (1) DK0727898T3 (enrdf_load_stackoverflow)
ES (1) ES2093534T3 (enrdf_load_stackoverflow)
GR (1) GR3021304T3 (enrdf_load_stackoverflow)
LT (1) LT4356B (enrdf_load_stackoverflow)
TW (1) TW291630B (enrdf_load_stackoverflow)
YU (1) YU8596A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI9620032A (sl) * 1995-02-10 1998-02-28 Electrowatt Technology Innovation Ag Telefonski aparat
ES2150394B1 (es) * 1999-04-13 2001-06-01 Telefonica Sa Dispositivo de control de fraude aplicable en telefonos publicos mod lares.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434529A1 (fr) * 1978-08-21 1980-03-21 App Automatiques Ste Fse Dispositif anti-fraude pour poste telephonique
US4759054A (en) * 1986-12-22 1988-07-19 Protel, Inc. Toll telephone system and method for maintaining or initiating loop current after resuming on-hook condition
US4885767A (en) 1987-09-29 1989-12-05 Therrien John L Blue-box fraud prevention
US5086459A (en) * 1990-02-23 1992-02-04 Keptel, Inc. Timing circuit and a secure telephone jack utilizing this circuit
US5150403A (en) 1991-05-28 1992-09-22 Jordan H Weaver Coin fraud prevention system for coin telephones

Also Published As

Publication number Publication date
LT97146A (lt) 1998-03-25
LT4356B (lt) 1998-06-25
ES2093534T3 (es) 1996-12-16
GR3021304T3 (en) 1997-01-31
AR000900A1 (es) 1997-08-06
YU8596A (sh) 1999-06-15
ATE143550T1 (de) 1996-10-15
DE59500025D1 (de) 1996-10-31
EP0727898B1 (de) 1996-09-25
TW291630B (enrdf_load_stackoverflow) 1996-11-21
EP0727898A1 (de) 1996-08-21

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment