JPS5784641A - Monitoring circuit - Google Patents

Monitoring circuit

Info

Publication number
JPS5784641A
JPS5784641A JP16026580A JP16026580A JPS5784641A JP S5784641 A JPS5784641 A JP S5784641A JP 16026580 A JP16026580 A JP 16026580A JP 16026580 A JP16026580 A JP 16026580A JP S5784641 A JPS5784641 A JP S5784641A
Authority
JP
Japan
Prior art keywords
signal
audio signal
pcm
circuit
multiplex signal
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
JP16026580A
Other languages
Japanese (ja)
Inventor
Masaaki Ogiso
Takeshi Sakai
Takahiro Furukawa
Ikuo Tokizawa
Kiyohisa Wakabayashi
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.)
Fujitsu Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd, Nippon Telegraph and Telephone Corp filed Critical Fujitsu Ltd
Priority to JP16026580A priority Critical patent/JPS5784641A/en
Publication of JPS5784641A publication Critical patent/JPS5784641A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H04J4/005—Transmultiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To enable various measurements arbitrarily from an audio signal side, by folding the audio signal with a transmultiplexer via one channel of PCM multiplex signal. CONSTITUTION:An audio signal is coded at 13 by a monitoring circuit 12 to form a PCM signal, transmitted to an arbitrary one channel of a PCM multiplex signal with an interface 15 and supplied to a transmultiplexer 11. The circuit 11 converts the PCM multiplex signal into an audio signal, and the audio signal is converted to an FDM multiplex signal for output. In this case, the FDM multiplex signal is folded through the operation of a switch 16 and inputted to the circuit 11, outputted as the PCM multiplex signal after the conversion into audio signal, and a transmission channel is selected at the circuit 12 and decoded at 14 as the audio signal.
JP16026580A 1980-11-14 1980-11-14 Monitoring circuit Pending JPS5784641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16026580A JPS5784641A (en) 1980-11-14 1980-11-14 Monitoring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16026580A JPS5784641A (en) 1980-11-14 1980-11-14 Monitoring circuit

Publications (1)

Publication Number Publication Date
JPS5784641A true JPS5784641A (en) 1982-05-27

Family

ID=15711257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16026580A Pending JPS5784641A (en) 1980-11-14 1980-11-14 Monitoring circuit

Country Status (1)

Country Link
JP (1) JPS5784641A (en)

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