JPS5639639A - Telephone set mounted on traveling body - Google Patents

Telephone set mounted on traveling body

Info

Publication number
JPS5639639A
JPS5639639A JP11421179A JP11421179A JPS5639639A JP S5639639 A JPS5639639 A JP S5639639A JP 11421179 A JP11421179 A JP 11421179A JP 11421179 A JP11421179 A JP 11421179A JP S5639639 A JPS5639639 A JP S5639639A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
circuit
set
characteristic
number
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.)
Pending
Application number
JP11421179A
Other versions
JPS5829017B2 (en )
Inventor
Hiroto Hara
Toshihide Komuro
Hisao Yanagida
Kensho Yoshikawa
Original Assignee
Matsushita Tsushin Kogyo Kk
Nippon Telegr & Teleph Corp <Ntt>
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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/66Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges with means for preventing unauthorised or fraudulent calling
    • H04M1/667Preventing unauthorised calls from a telephone set
    • H04M1/67Preventing unauthorised calls from a telephone set by electronic means
    • H04M1/673Preventing unauthorised calls from a telephone set by electronic means the user being required to key in a code

Abstract

PURPOSE:To prevent the third person from using a telephone set by decoding a user's characteristic number that is set prior to origination. CONSTITUTION:A number, once inputted from dial 14, converted by keyboard deciphering circuit 16 into a fixed code, which is stored in memory circuit 18. The output of this circuit 18 is compared to the contents of characteristic memories 19-21 of comparators 22-24. When the dialed characteristic number agrees with the contents of memory 19, one of FFs 25-27 is set and central processing circuit 28 is informed of the identity. After the information, circuit 28 resets circuit 18. In accordance with states of FFs 25-27, circuit 28 limits a dialing available area with regard to a call following the characteristic-number input operation. Thus, while the third person is inhibited from using the telephone set, indivicual services can be offered to many users.
JP11421179A 1979-09-07 1979-09-07 Expired JPS5829017B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11421179A JPS5829017B2 (en) 1979-09-07 1979-09-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11421179A JPS5829017B2 (en) 1979-09-07 1979-09-07

Publications (2)

Publication Number Publication Date
JPS5639639A true true JPS5639639A (en) 1981-04-15
JPS5829017B2 JPS5829017B2 (en) 1983-06-20

Family

ID=14631985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11421179A Expired JPS5829017B2 (en) 1979-09-07 1979-09-07

Country Status (1)

Country Link
JP (1) JPS5829017B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211354A (en) * 1985-07-09 1987-01-20 Alpine Electron Inc Locking method for function of automobile telephone system
JPH02260954A (en) * 1989-03-31 1990-10-23 Toshiba Corp Telephone set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211354A (en) * 1985-07-09 1987-01-20 Alpine Electron Inc Locking method for function of automobile telephone system
JPH02260954A (en) * 1989-03-31 1990-10-23 Toshiba Corp Telephone set

Also Published As

Publication number Publication date Type
JPS5829017B2 (en) 1983-06-20 grant
JP1195811C (en) grant

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