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GB2269961B - Telephone call barring circuit - Google Patents

Telephone call barring circuit

Info

Publication number
GB2269961B
GB2269961B GB9217521A GB9217521A GB2269961B GB 2269961 B GB2269961 B GB 2269961B GB 9217521 A GB9217521 A GB 9217521A GB 9217521 A GB9217521 A GB 9217521A GB 2269961 B GB2269961 B GB 2269961B
Authority
GB
United Kingdom
Prior art keywords
telephone call
call barring
circuit
barring circuit
telephone
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
GB9217521A
Other versions
GB9217521D0 (en
GB2269961A (en
Inventor
Graham George Markham Adcock
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.)
Hosiden Besson Ltd
Original Assignee
Hosiden Besson 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 Hosiden Besson Ltd filed Critical Hosiden Besson Ltd
Priority to GB9217521A priority Critical patent/GB2269961B/en
Publication of GB9217521D0 publication Critical patent/GB9217521D0/en
Priority to MYPI93001513A priority patent/MY109896A/en
Publication of GB2269961A publication Critical patent/GB2269961A/en
Application granted granted Critical
Publication of GB2269961B publication Critical patent/GB2269961B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
GB9217521A 1992-08-18 1992-08-18 Telephone call barring circuit Expired - Fee Related GB2269961B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9217521A GB2269961B (en) 1992-08-18 1992-08-18 Telephone call barring circuit
MYPI93001513A MY109896A (en) 1992-08-18 1993-08-02 Telephone call barring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9217521A GB2269961B (en) 1992-08-18 1992-08-18 Telephone call barring circuit

Publications (3)

Publication Number Publication Date
GB9217521D0 GB9217521D0 (en) 1992-09-30
GB2269961A GB2269961A (en) 1994-02-23
GB2269961B true GB2269961B (en) 1996-11-20

Family

ID=10720527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9217521A Expired - Fee Related GB2269961B (en) 1992-08-18 1992-08-18 Telephone call barring circuit

Country Status (2)

Country Link
GB (1) GB2269961B (en)
MY (1) MY109896A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2750557B1 (en) * 1996-06-26 1998-08-21 Henri Depaepe Sa DISCRIMINATION OF NUMBERS IN A TELECOMMUNICATIONS TERMINAL
KR100489688B1 (en) * 2003-01-24 2005-05-17 삼성전자주식회사 Key scanning Apparatus in complex telephone

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133250A (en) * 1982-12-31 1984-07-18 Oki Electric Ind Co Ltd A telephone-call prohibit circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133250A (en) * 1982-12-31 1984-07-18 Oki Electric Ind Co Ltd A telephone-call prohibit circuit

Also Published As

Publication number Publication date
MY109896A (en) 1997-09-30
GB9217521D0 (en) 1992-09-30
GB2269961A (en) 1994-02-23

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Legal Events

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

Effective date: 20020818