JPS5542432A - Digital multiplication transmission system for call signal - Google Patents

Digital multiplication transmission system for call signal

Info

Publication number
JPS5542432A
JPS5542432A JP11543978A JP11543978A JPS5542432A JP S5542432 A JPS5542432 A JP S5542432A JP 11543978 A JP11543978 A JP 11543978A JP 11543978 A JP11543978 A JP 11543978A JP S5542432 A JPS5542432 A JP S5542432A
Authority
JP
Japan
Prior art keywords
signal
channel
transmission
call
allotment
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
JP11543978A
Other languages
Japanese (ja)
Inventor
Kenichi Mase
Chiaki Hishinuma
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 JP11543978A priority Critical patent/JPS5542432A/en
Publication of JPS5542432A publication Critical patent/JPS5542432A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI

Abstract

PURPOSE:To ensure an effective use of the idle time of the call and thus to realize a big reduction for the channel number by partitioning the call signal into the sound element blocks with every fixed micro-time, detecting the presence or absence of the aural signal every block and then having the channel allotment based on the result of detection of the aural signal for transmission. CONSTITUTION:Voice detection device 12 connected to multiplication device 11 at the transmission side partitions the PCM-changed call signal into the sound element blocks every fixed micro-time and then detects the presence or absence of the aural signal every block. Based on the detection result, channel allotment 13 is given to telephone circuits 11-1l with every sound element block for carrying out transmission 15. While at the reception side, the transmission signal is isolated at allotment signal reception device 17, and channel switch 19 is controlled via channel distribution control unit 18 to transmit the transmission signal to analog telephone circuits 22-2l via PCM decoding multiplication isolator 21. In such way, the idle time of the call can be utilized effectively, thus realizing a reduction of the necessary channel number for the output transmision line.
JP11543978A 1978-09-20 1978-09-20 Digital multiplication transmission system for call signal Pending JPS5542432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11543978A JPS5542432A (en) 1978-09-20 1978-09-20 Digital multiplication transmission system for call signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11543978A JPS5542432A (en) 1978-09-20 1978-09-20 Digital multiplication transmission system for call signal

Publications (1)

Publication Number Publication Date
JPS5542432A true JPS5542432A (en) 1980-03-25

Family

ID=14662578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11543978A Pending JPS5542432A (en) 1978-09-20 1978-09-20 Digital multiplication transmission system for call signal

Country Status (1)

Country Link
JP (1) JPS5542432A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100870U (en) * 1983-12-10 1985-07-09 日本信号株式会社 Monitoring equipment for station equipment
JPS63167958A (en) * 1986-12-29 1988-07-12 Matsushita Electric Ind Co Ltd Character-string classification processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100870U (en) * 1983-12-10 1985-07-09 日本信号株式会社 Monitoring equipment for station equipment
JPS63167958A (en) * 1986-12-29 1988-07-12 Matsushita Electric Ind Co Ltd Character-string classification processor

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