LV11932A - Telefona aparats - Google Patents

Telefona aparats

Info

Publication number
LV11932A
LV11932A LV970164A LV970164A LV11932A LV 11932 A LV11932 A LV 11932A LV 970164 A LV970164 A LV 970164A LV 970164 A LV970164 A LV 970164A LV 11932 A LV11932 A LV 11932A
Authority
LV
Latvia
Prior art keywords
telephone apparatus
telephone
Prior art date
Application number
LV970164A
Other languages
English (en)
Other versions
LV11932B (lv
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 LV11932A publication Critical patent/LV11932A/lv
Publication of LV11932B publication Critical patent/LV11932B/lv

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)
  • Telephone Set Structure (AREA)
  • Electromagnets (AREA)
  • Silicon Polymers (AREA)
LVP-97-164A 1995-02-10 1997-09-10 Telefona aparāts LV11932B (lv)

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
LV11932A true LV11932A (lv) 1997-12-20
LV11932B LV11932B (lv) 1998-06-20

Family

ID=25684432

Family Applications (1)

Application Number Title Priority Date Filing Date
LVP-97-164A LV11932B (lv) 1995-02-10 1997-09-10 Telefona aparāts

Country Status (13)

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

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
DE59500025D1 (de) * 1995-02-10 1996-10-31 Landis & Gyr Tech Innovat Telefonstation

Also Published As

Publication number Publication date
HRP960068A2 (en) 1997-08-31
HRP960068B1 (en) 1998-12-31
NO973565L (no) 1997-10-09
FI973261A0 (fi) 1997-08-07
AU699535B2 (en) 1998-12-03
SI9620032A (sl) 1998-02-28
EE9700167A (et) 1998-02-16
PL321782A1 (en) 1997-12-22
WO1996025000A1 (de) 1996-08-15
SK102197A3 (en) 1998-01-14
CN1173956A (zh) 1998-02-18
US5864618A (en) 1999-01-26
NO973565D0 (no) 1997-08-01
CZ230097A3 (cs) 1998-03-18
AU4382696A (en) 1996-08-27
LV11932B (lv) 1998-06-20
FI973261A (fi) 1997-08-07

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