JPS56166653A - Circuit terminator - Google Patents

Circuit terminator

Info

Publication number
JPS56166653A
JPS56166653A JP7117180A JP7117180A JPS56166653A JP S56166653 A JPS56166653 A JP S56166653A JP 7117180 A JP7117180 A JP 7117180A JP 7117180 A JP7117180 A JP 7117180A JP S56166653 A JPS56166653 A JP S56166653A
Authority
JP
Japan
Prior art keywords
voice
speed
low
channel
terminal
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
JP7117180A
Other languages
Japanese (ja)
Inventor
Haruo Ogiwara
Shoji Mano
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 JP7117180A priority Critical patent/JPS56166653A/en
Publication of JPS56166653A publication Critical patent/JPS56166653A/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
    • H04M11/068—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using time division multiplex techniques

Abstract

PURPOSE:To utilize a voice terminal and low-speed no-voice terminal for communication through minimum operation by providing a circuit which switches and connects a high-speed channel to a partially divided channel and another circuit which switches and connects a low-speed terminal to a low-speed channel. CONSTITUTION:A switching circuit 8 switches a channel 11, used for LBS transmsission, for the LSB (least significant bit) transmission of a voice in original use mode or the transmission of no-voice data. A switching circuit 9 connects a signal from a low-speed no-voice terminal equipment 2 to an additional data channel 12 for control. When voice communication and low-speed no-voice communication are performed with the same party subscriber simultaneously, circuits 8 and 9 are switched to the side of a terminal (b) and a low-speed no-voice signal is transmitted as a substitute for LSB, thereby performing the simultaneous communication of a voice and low-speed no-voice data through only one channel of 64k bits/S. In other cases, the circuits 8 and 9 are switched to the side of a terminal (a) to transmit the low-speed no-voice signal via the channel 12 independently of the voice.
JP7117180A 1980-05-28 1980-05-28 Circuit terminator Pending JPS56166653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7117180A JPS56166653A (en) 1980-05-28 1980-05-28 Circuit terminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7117180A JPS56166653A (en) 1980-05-28 1980-05-28 Circuit terminator

Publications (1)

Publication Number Publication Date
JPS56166653A true JPS56166653A (en) 1981-12-21

Family

ID=13452937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7117180A Pending JPS56166653A (en) 1980-05-28 1980-05-28 Circuit terminator

Country Status (1)

Country Link
JP (1) JPS56166653A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411460A (en) * 1987-07-03 1989-01-17 Hitachi Ltd Composite communication system for speech and data
JPH01189274A (en) * 1988-01-25 1989-07-28 Nec Corp Video telephone high-efficiency encoder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6411460A (en) * 1987-07-03 1989-01-17 Hitachi Ltd Composite communication system for speech and data
JPH01189274A (en) * 1988-01-25 1989-07-28 Nec Corp Video telephone high-efficiency encoder

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