JPS54128607A - Reception system for push button signal - Google Patents

Reception system for push button signal

Info

Publication number
JPS54128607A
JPS54128607A JP3722278A JP3722278A JPS54128607A JP S54128607 A JPS54128607 A JP S54128607A JP 3722278 A JP3722278 A JP 3722278A JP 3722278 A JP3722278 A JP 3722278A JP S54128607 A JPS54128607 A JP S54128607A
Authority
JP
Japan
Prior art keywords
push button
receiver
subscriber
button signal
circuit
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
JP3722278A
Other languages
Japanese (ja)
Inventor
Takeshi Yoshioka
Takeo Onodera
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 JP3722278A priority Critical patent/JPS54128607A/en
Publication of JPS54128607A publication Critical patent/JPS54128607A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Abstract

PURPOSE:To avoid occurring the line of subscriber in busy condition with one set of receiver, by contolling the scanning circuit, scanning the subscriber lines one after another at a given time, and connecting them to the push button receiver. CONSTITUTION:The exchanger 2 is controlled with selection by the scan control circuit 8 and the scan circuit 9, and each subscriber line 2 is scanned one after another every given time and is connected to the push button signal receiver 3. The push button detection circuit 10 is provided, which detects the push button signal of the subscriber line 1 disconnected with the release of the push button switch of the push phone and judges the end of one dial number, discriminating the same number depressed twice or depressed continuously. Thus, in receiver 3 avoids the occurrence of the subscriber line in busy condition to a plurality of subscriber lines.
JP3722278A 1978-03-29 1978-03-29 Reception system for push button signal Pending JPS54128607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3722278A JPS54128607A (en) 1978-03-29 1978-03-29 Reception system for push button signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3722278A JPS54128607A (en) 1978-03-29 1978-03-29 Reception system for push button signal

Publications (1)

Publication Number Publication Date
JPS54128607A true JPS54128607A (en) 1979-10-05

Family

ID=12491556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3722278A Pending JPS54128607A (en) 1978-03-29 1978-03-29 Reception system for push button signal

Country Status (1)

Country Link
JP (1) JPS54128607A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63316993A (en) * 1987-06-19 1988-12-26 Nec Corp Line switching equipment
JPH01284094A (en) * 1988-05-10 1989-11-15 Canon Inc Communication equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63316993A (en) * 1987-06-19 1988-12-26 Nec Corp Line switching equipment
JPH01284094A (en) * 1988-05-10 1989-11-15 Canon Inc Communication equipment

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