GB2330270B - Pay phone security protection circuit - Google Patents

Pay phone security protection circuit

Info

Publication number
GB2330270B
GB2330270B GB9721326A GB9721326A GB2330270B GB 2330270 B GB2330270 B GB 2330270B GB 9721326 A GB9721326 A GB 9721326A GB 9721326 A GB9721326 A GB 9721326A GB 2330270 B GB2330270 B GB 2330270B
Authority
GB
United Kingdom
Prior art keywords
protection circuit
security protection
pay phone
phone security
pay
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 - Fee Related
Application number
GB9721326A
Other versions
GB9721326D0 (en
GB2330270A (en
Inventor
Cheng-Wei Wu
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.)
Inventec Corp
Original Assignee
Inventec 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
Application filed by Inventec Corp filed Critical Inventec Corp
Priority to GB9721326A priority Critical patent/GB2330270B/en
Publication of GB9721326D0 publication Critical patent/GB9721326D0/en
Publication of GB2330270A publication Critical patent/GB2330270A/en
Application granted granted Critical
Publication of GB2330270B publication Critical patent/GB2330270B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04M15/47—Fraud detection or prevention 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/01—Details of billing arrangements
    • H04M2215/0148—Fraud detection or prevention means

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB9721326A 1997-10-09 1997-10-09 Pay phone security protection circuit Expired - Fee Related GB2330270B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9721326A GB2330270B (en) 1997-10-09 1997-10-09 Pay phone security protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9721326A GB2330270B (en) 1997-10-09 1997-10-09 Pay phone security protection circuit

Publications (3)

Publication Number Publication Date
GB9721326D0 GB9721326D0 (en) 1997-12-10
GB2330270A GB2330270A (en) 1999-04-14
GB2330270B true GB2330270B (en) 2002-08-07

Family

ID=10820227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9721326A Expired - Fee Related GB2330270B (en) 1997-10-09 1997-10-09 Pay phone security protection circuit

Country Status (1)

Country Link
GB (1) GB2330270B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205216A (en) * 1987-05-09 1988-11-30 Alcatel Nv Circuit arrangement for monitoring a telephone line

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2205216A (en) * 1987-05-09 1988-11-30 Alcatel Nv Circuit arrangement for monitoring a telephone line

Also Published As

Publication number Publication date
GB9721326D0 (en) 1997-12-10
GB2330270A (en) 1999-04-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20101009