GB8422336D0 - Telephone security device - Google Patents

Telephone security device

Info

Publication number
GB8422336D0
GB8422336D0 GB848422336A GB8422336A GB8422336D0 GB 8422336 D0 GB8422336 D0 GB 8422336D0 GB 848422336 A GB848422336 A GB 848422336A GB 8422336 A GB8422336 A GB 8422336A GB 8422336 D0 GB8422336 D0 GB 8422336D0
Authority
GB
United Kingdom
Prior art keywords
security device
telephone security
telephone
security
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.)
Granted
Application number
GB848422336A
Other versions
GB2146507A (en
GB2146507B (en
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.)
Lake Electronic Technologies Ltd
Original Assignee
Lake Electronic Technologies Ltd
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 Lake Electronic Technologies Ltd filed Critical Lake Electronic Technologies Ltd
Publication of GB8422336D0 publication Critical patent/GB8422336D0/en
Publication of GB2146507A publication Critical patent/GB2146507A/en
Application granted granted Critical
Publication of GB2146507B publication Critical patent/GB2146507B/en
Expired legal-status Critical Current

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
    • H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
GB08422336A 1983-09-08 1984-09-04 Telephone security device Expired GB2146507B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE210483A IE54755B1 (en) 1983-09-08 1983-09-08 Telephone security device

Publications (3)

Publication Number Publication Date
GB8422336D0 true GB8422336D0 (en) 1984-10-10
GB2146507A GB2146507A (en) 1985-04-17
GB2146507B GB2146507B (en) 1987-05-13

Family

ID=11032819

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08422336A Expired GB2146507B (en) 1983-09-08 1984-09-04 Telephone security device

Country Status (4)

Country Link
BE (1) BE900532A (en)
GB (1) GB2146507B (en)
HK (1) HK6488A (en)
IE (1) IE54755B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195219A (en) * 1986-09-10 1988-03-30 Timothy Meehan Call barring device
GB2220323A (en) * 1988-03-22 1990-01-04 Philip Malcolm Ballabon Telephone electronic combination lock
GB2227906B (en) * 1988-12-23 1993-06-16 Rathdown Ind Ltd Telephone including a call barrer
FR2688368A1 (en) * 1992-03-04 1993-09-10 Michel Corneux Device for displaying call transfer functions
US5535265A (en) * 1993-11-15 1996-07-09 Ast Research, Inc. Method and circuitry for controlling voice mail, call logging and call blocking functions using a modem
FR2769448B1 (en) * 1997-10-06 1999-11-12 Nicole Maschio TELEPHONE COMMUNICATIONS FILTERING DEVICE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569257A (en) * 1975-11-17 1980-06-11 Murray L Q Of a telephone instrument telephone security device for preventing unauthorised use
GB1579873A (en) * 1978-05-31 1980-11-26 Murray L Q Telefone security device for preventing unauthorised use of a subscribers set
GB2086187A (en) * 1980-10-09 1982-05-06 Standard Telephones Cables Ltd Toll barring
GB2104347A (en) * 1981-06-19 1983-03-02 Interaction Resources Limited Improvements in or relating to telephone sets
GB2123254A (en) * 1982-05-14 1984-01-25 Answercall Limited Telephone instruments

Also Published As

Publication number Publication date
GB2146507A (en) 1985-04-17
HK6488A (en) 1988-01-29
BE900532A (en) 1985-01-02
GB2146507B (en) 1987-05-13
IE832104L (en) 1985-03-08
IE54755B1 (en) 1990-01-31

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Legal Events

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

Effective date: 19920904