NO973565L - Telefonapparat - Google Patents

Telefonapparat

Info

Publication number
NO973565L
NO973565L NO973565A NO973565A NO973565L NO 973565 L NO973565 L NO 973565L NO 973565 A NO973565 A NO 973565A NO 973565 A NO973565 A NO 973565A NO 973565 L NO973565 L NO 973565L
Authority
NO
Norway
Prior art keywords
measuring
telephone apparatus
coil
switch
switches
Prior art date
Application number
NO973565A
Other languages
English (en)
Norwegian (no)
Other versions
NO973565D0 (no
Inventor
Thomas Seitz
Urs Falk
Original Assignee
Electrowatt Tech Innovat Corp
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
Priority claimed from EP95108824A external-priority patent/EP0727898B1/de
Application filed by Electrowatt Tech Innovat Corp filed Critical Electrowatt Tech Innovat Corp
Publication of NO973565D0 publication Critical patent/NO973565D0/no
Publication of NO973565L publication Critical patent/NO973565L/no

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
    • 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
    • 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
    • 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)
  • Burglar Alarm Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Measuring Magnetic Variables (AREA)
  • Electromagnets (AREA)
  • Silicon Polymers (AREA)
  • Telephone Set Structure (AREA)
NO973565A 1995-02-10 1997-08-01 Telefonapparat NO973565L (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH39195 1995-02-10
EP95108824A EP0727898B1 (de) 1995-02-10 1995-06-08 Telefonstation
PCT/CH1996/000017 WO1996025000A1 (de) 1995-02-10 1996-01-15 Telefonstation

Publications (2)

Publication Number Publication Date
NO973565D0 NO973565D0 (no) 1997-08-01
NO973565L true NO973565L (no) 1997-10-09

Family

ID=25684432

Family Applications (1)

Application Number Title Priority Date Filing Date
NO973565A NO973565L (no) 1995-02-10 1997-08-01 Telefonapparat

Country Status (13)

Country Link
US (1) US5864618A (xx)
CN (1) CN1173956A (xx)
AU (1) AU699535B2 (xx)
CZ (1) CZ230097A3 (xx)
EE (1) EE9700167A (xx)
FI (1) FI973261A (xx)
HR (1) HRP960068B1 (xx)
LV (1) LV11932B (xx)
NO (1) NO973565L (xx)
PL (1) PL321782A1 (xx)
SI (1) SI9620032A (xx)
SK (1) SK102197A3 (xx)
WO (1) WO1996025000A1 (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6104795A (en) * 1998-12-04 2000-08-15 Lucent Technologies Inc. Method and apparatus for detecting and announcing pin fraud on coin telephones that use battery reversal pulses to meter charges

Family Cites Families (8)

* 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
US5022073A (en) * 1990-04-17 1991-06-04 Jordan H Weaver Pin fraud and shock prevention system
US5150403A (en) * 1991-05-28 1992-09-22 Jordan H Weaver Coin fraud prevention system for coin telephones
DE4120079C2 (de) * 1991-06-18 1994-06-16 Siemens Ag Verfahren für eine Fernsprechstation mit MFV-Wahl und Rufnummernauswerter
EP0727898B1 (de) * 1995-02-10 1996-09-25 Landis & Gyr Technology Innovation AG Telefonstation

Also Published As

Publication number Publication date
WO1996025000A1 (de) 1996-08-15
FI973261A0 (fi) 1997-08-07
CN1173956A (zh) 1998-02-18
US5864618A (en) 1999-01-26
EE9700167A (et) 1998-02-16
NO973565D0 (no) 1997-08-01
SI9620032A (sl) 1998-02-28
CZ230097A3 (cs) 1998-03-18
AU4382696A (en) 1996-08-27
LV11932A (lv) 1997-12-20
FI973261A (fi) 1997-08-07
HRP960068A2 (en) 1997-08-31
PL321782A1 (en) 1997-12-22
HRP960068B1 (en) 1998-12-31
SK102197A3 (en) 1998-01-14
AU699535B2 (en) 1998-12-03
LV11932B (lv) 1998-06-20

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