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
characteristic
number
telephone set
set
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

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