JPS574651A - Audible signal transmitting system - Google Patents

Audible signal transmitting system

Info

Publication number
JPS574651A
JPS574651A JP7809980A JP7809980A JPS574651A JP S574651 A JPS574651 A JP S574651A JP 7809980 A JP7809980 A JP 7809980A JP 7809980 A JP7809980 A JP 7809980A JP S574651 A JPS574651 A JP S574651A
Authority
JP
Japan
Prior art keywords
audible signal
distributed
group
channel
time
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
JP7809980A
Other languages
Japanese (ja)
Inventor
Keiichi Miyahara
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
Original Assignee
NEC 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 Electric Co Ltd filed Critical NEC Corp
Priority to JP7809980A priority Critical patent/JPS574651A/en
Publication of JPS574651A publication Critical patent/JPS574651A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To realize a transmission of a designated audible signal to an optional terminal circuit regardless of the internal congestion of a switchboard, by connecting a digital coded audible signal source to the primary side of a time-division line concentrating swtich and then inserting the audible signal into a channel of the secondary side to which no multiplex signal is transmitted in order to transmit the audible signal to a terminal. CONSTITUTION:The multiplex signals supplied from a time-division channel switch TDSW are controlled by control lines C and D in correspondence to the input channels and then distributed to the PCM modulator/demodulator CODEC group A or B. In case the channel (i) supplied from the switch TDSW is distributed to the group A, the digitized audible signal is distributed to the group A.
JP7809980A 1980-06-10 1980-06-10 Audible signal transmitting system Pending JPS574651A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7809980A JPS574651A (en) 1980-06-10 1980-06-10 Audible signal transmitting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7809980A JPS574651A (en) 1980-06-10 1980-06-10 Audible signal transmitting system

Publications (1)

Publication Number Publication Date
JPS574651A true JPS574651A (en) 1982-01-11

Family

ID=13652418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7809980A Pending JPS574651A (en) 1980-06-10 1980-06-10 Audible signal transmitting system

Country Status (1)

Country Link
JP (1) JPS574651A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6176152A (en) * 1984-09-25 1986-04-18 学校法人東京女子医科大学 Medical tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6176152A (en) * 1984-09-25 1986-04-18 学校法人東京女子医科大学 Medical tube
JPH0587256B2 (en) * 1984-09-25 1993-12-16 Tokyo Joshi Ika Daigaku

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