JPS53137611A - Response monitor circuit in telephone exchanging unit - Google Patents

Response monitor circuit in telephone exchanging unit

Info

Publication number
JPS53137611A
JPS53137611A JP5204877A JP5204877A JPS53137611A JP S53137611 A JPS53137611 A JP S53137611A JP 5204877 A JP5204877 A JP 5204877A JP 5204877 A JP5204877 A JP 5204877A JP S53137611 A JPS53137611 A JP S53137611A
Authority
JP
Japan
Prior art keywords
monitor circuit
exchanging unit
response monitor
telephone exchanging
telephone
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
JP5204877A
Other languages
Japanese (ja)
Inventor
Shiro Enami
Tetsuo Takeshita
Naohiko Yasui
Akira Kikuchi
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.)
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi 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 Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP5204877A priority Critical patent/JPS53137611A/en
Publication of JPS53137611A publication Critical patent/JPS53137611A/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 establish a response monitor circuit in a telephone exchanging unit having less communication loss and small in size and constituted all with semiconductors.
JP5204877A 1977-05-09 1977-05-09 Response monitor circuit in telephone exchanging unit Pending JPS53137611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5204877A JPS53137611A (en) 1977-05-09 1977-05-09 Response monitor circuit in telephone exchanging unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5204877A JPS53137611A (en) 1977-05-09 1977-05-09 Response monitor circuit in telephone exchanging unit

Publications (1)

Publication Number Publication Date
JPS53137611A true JPS53137611A (en) 1978-12-01

Family

ID=12903923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5204877A Pending JPS53137611A (en) 1977-05-09 1977-05-09 Response monitor circuit in telephone exchanging unit

Country Status (1)

Country Link
JP (1) JPS53137611A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61267494A (en) * 1985-05-22 1986-11-27 Matsushita Electric Ind Co Ltd Private branch electronic exchange

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019307A (en) * 1973-05-17 1975-02-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019307A (en) * 1973-05-17 1975-02-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61267494A (en) * 1985-05-22 1986-11-27 Matsushita Electric Ind Co Ltd Private branch electronic exchange

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