JPS5637794A - Multidrop circuit control system for audio response unit - Google Patents

Multidrop circuit control system for audio response unit

Info

Publication number
JPS5637794A
JPS5637794A JP11380579A JP11380579A JPS5637794A JP S5637794 A JPS5637794 A JP S5637794A JP 11380579 A JP11380579 A JP 11380579A JP 11380579 A JP11380579 A JP 11380579A JP S5637794 A JPS5637794 A JP S5637794A
Authority
JP
Japan
Prior art keywords
control part
carrier
circuit
receiver
transmits
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
JP11380579A
Other languages
Japanese (ja)
Inventor
Kozo Yamada
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 JP11380579A priority Critical patent/JPS5637794A/en
Publication of JPS5637794A publication Critical patent/JPS5637794A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
    • H04Q5/08—Signalling by continuous ac
    • H04Q5/10—Signalling by continuous ac using single frequencies for different subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To increase the using efficiency of the circuit, by transmitting the specific frequency allotted each to make several aural receivers receivable. CONSTITUTION:The audio response unit 30 transmits the transmission starting time carrier to the circuit from the communication control part 34 via the carrier control part 31, and then transmits for a fixed time the frequency allotted to the receiver from the address converting part 35. On the other hand, the receiver 40 detects the carrier at the circuit control part 41 and then waits for the frequency allotted to the self-receiver. Then the receivable state is secured for the aural control part 43 after detection of the frequency at the reception control part 42. Then the unit 30 repeats the calling action in case several receivers 40 exist, and then transmits the voice from the aural data control part 33 in a fixed time after completion of calling. Then the carrier is cut off by the carrier control part 32 when the transmission is through to complete the transmission. In such way, the circuit can be used in a high efficiency.
JP11380579A 1979-09-05 1979-09-05 Multidrop circuit control system for audio response unit Pending JPS5637794A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11380579A JPS5637794A (en) 1979-09-05 1979-09-05 Multidrop circuit control system for audio response unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11380579A JPS5637794A (en) 1979-09-05 1979-09-05 Multidrop circuit control system for audio response unit

Publications (1)

Publication Number Publication Date
JPS5637794A true JPS5637794A (en) 1981-04-11

Family

ID=14621505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11380579A Pending JPS5637794A (en) 1979-09-05 1979-09-05 Multidrop circuit control system for audio response unit

Country Status (1)

Country Link
JP (1) JPS5637794A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0340653A (en) * 1989-07-07 1991-02-21 Matsushita Electric Ind Co Ltd Wired broadcast telephone set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0340653A (en) * 1989-07-07 1991-02-21 Matsushita Electric Ind Co Ltd Wired broadcast telephone set

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