JPS5781762A - Terminal mode switching signal system for digital telephone - Google Patents

Terminal mode switching signal system for digital telephone

Info

Publication number
JPS5781762A
JPS5781762A JP15839980A JP15839980A JPS5781762A JP S5781762 A JPS5781762 A JP S5781762A JP 15839980 A JP15839980 A JP 15839980A JP 15839980 A JP15839980 A JP 15839980A JP S5781762 A JPS5781762 A JP S5781762A
Authority
JP
Japan
Prior art keywords
mode
speed data
receiver
telephone
low
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
JP15839980A
Other languages
Japanese (ja)
Other versions
JPH0132697B2 (en
Inventor
Fujio Amamiya
Naoki Matsuo
Akinobu Tomimori
Ryuichi Shibata
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.)
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric Co 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 NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15839980A priority Critical patent/JPS5781762A/en
Publication of JPS5781762A publication Critical patent/JPS5781762A/en
Publication of JPH0132697B2 publication Critical patent/JPH0132697B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To realize the voice/data mixture communication with extremely high efficiency, by transfering that has the alternation with a prescribed frame period during a call or the data communication and then switching the using modes of a remote telephone and own telephone. CONSTITUTION:In the 1st using mode, i.e., the normal call mode, a transmitter microphone 1 and a telephone receiver 2 are used in the transmission system and the reception system respectively. In the 2nd using mode, i.e., the simultaneous communication mode of both a call and a low-speed data, the microphone 1 and a low-speed data transmitter 3 are used in the transmission system along with use of the receiver 2 and a low-speed data receiver 4 in the reception system respectively. In the 3rd using mode, i.e., the data communication mode, a high- speed data transmitter 5 and a high-speed data receiver 6 are used in the transmission system and the reception system respectively. These 3 using mode are switched through the 1st transmission signal switch part 8 and a reception signal switch part 9 and based on a command given from a using mode switch control part 7.
JP15839980A 1980-11-11 1980-11-11 Terminal mode switching signal system for digital telephone Granted JPS5781762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15839980A JPS5781762A (en) 1980-11-11 1980-11-11 Terminal mode switching signal system for digital telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15839980A JPS5781762A (en) 1980-11-11 1980-11-11 Terminal mode switching signal system for digital telephone

Publications (2)

Publication Number Publication Date
JPS5781762A true JPS5781762A (en) 1982-05-21
JPH0132697B2 JPH0132697B2 (en) 1989-07-10

Family

ID=15670886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15839980A Granted JPS5781762A (en) 1980-11-11 1980-11-11 Terminal mode switching signal system for digital telephone

Country Status (1)

Country Link
JP (1) JPS5781762A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61212956A (en) * 1985-03-18 1986-09-20 Nippon Telegr & Teleph Corp <Ntt> Digital telephone set
JPS62137961A (en) * 1985-12-11 1987-06-20 Nec Corp Subscriber system
JPS6411460A (en) * 1987-07-03 1989-01-17 Hitachi Ltd Composite communication system for speech and data

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61212956A (en) * 1985-03-18 1986-09-20 Nippon Telegr & Teleph Corp <Ntt> Digital telephone set
JPS62137961A (en) * 1985-12-11 1987-06-20 Nec Corp Subscriber system
JPS6411460A (en) * 1987-07-03 1989-01-17 Hitachi Ltd Composite communication system for speech and data

Also Published As

Publication number Publication date
JPH0132697B2 (en) 1989-07-10

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