JPS5644257A - Telephone set - Google Patents

Telephone set

Info

Publication number
JPS5644257A
JPS5644257A JP12016779A JP12016779A JPS5644257A JP S5644257 A JPS5644257 A JP S5644257A JP 12016779 A JP12016779 A JP 12016779A JP 12016779 A JP12016779 A JP 12016779A JP S5644257 A JPS5644257 A JP S5644257A
Authority
JP
Japan
Prior art keywords
turned
switch
dial
signal
generator
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
JP12016779A
Other languages
Japanese (ja)
Inventor
Yutaka Nishino
Makoto Yoshitoshi
Kunihiro Kato
Akira Naemura
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12016779A priority Critical patent/JPS5644257A/en
Publication of JPS5644257A publication Critical patent/JPS5644257A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/066—Telephone sets adapted for data transmision

Abstract

PURPOSE:To perform service such as calculation and seat reservation, by performing communication dependently upon a multifrequency dial signal after connection of the line to the other-party terminal dependent upon a DC dial pulse signal. CONSTITUTION:Switches 21 and 22 to control electric power to dial pulse (DP) generator 3 and multifrequency signal (MF) generator 4 are normally turned off. When MF generator 4 is operating, switch 23 to disconnect transmitter 14 from the telephone set circuit is normally turned on. When dial switch 1 is depressed after off-hook, switch 21 is turned on, and transistor TR17 is turned on, and the DP signal is transmitted by turning-on and off of TR16. When the incoming terminal responds, switches 22 and 23 are turned on and off respectively, and MF is transmitted from MF generating circuit 4, and switch 21 is turned off still, and DP generating circuit 3 is not operated. As a result, various service between terminals is possible with the same dial switch.
JP12016779A 1979-09-20 1979-09-20 Telephone set Pending JPS5644257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12016779A JPS5644257A (en) 1979-09-20 1979-09-20 Telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12016779A JPS5644257A (en) 1979-09-20 1979-09-20 Telephone set

Publications (1)

Publication Number Publication Date
JPS5644257A true JPS5644257A (en) 1981-04-23

Family

ID=14779594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12016779A Pending JPS5644257A (en) 1979-09-20 1979-09-20 Telephone set

Country Status (1)

Country Link
JP (1) JPS5644257A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58136162A (en) * 1982-02-09 1983-08-13 Iwatsu Electric Co Ltd Dial mode switching system
JPS58142659A (en) * 1982-02-18 1983-08-24 Nippon Telegr & Teleph Corp <Ntt> Dial signal originating circuit
JPS59231958A (en) * 1983-06-14 1984-12-26 Sharp Corp Repertory dialer in common use with tone and pulse
JPS6084602A (en) * 1983-10-14 1985-05-14 Nec Corp Malfunction preventing circuit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58136162A (en) * 1982-02-09 1983-08-13 Iwatsu Electric Co Ltd Dial mode switching system
JPH0113261B2 (en) * 1982-02-09 1989-03-06 Iwasaki Tsushinki Kk
JPS58142659A (en) * 1982-02-18 1983-08-24 Nippon Telegr & Teleph Corp <Ntt> Dial signal originating circuit
JPH0526381B2 (en) * 1982-02-18 1993-04-15 Nippon Denshin Denwa Kk
JPS59231958A (en) * 1983-06-14 1984-12-26 Sharp Corp Repertory dialer in common use with tone and pulse
JPS6084602A (en) * 1983-10-14 1985-05-14 Nec Corp Malfunction preventing circuit

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