JPS5368010A - Ring trip circuit - Google Patents

Ring trip circuit

Info

Publication number
JPS5368010A
JPS5368010A JP14309176A JP14309176A JPS5368010A JP S5368010 A JPS5368010 A JP S5368010A JP 14309176 A JP14309176 A JP 14309176A JP 14309176 A JP14309176 A JP 14309176A JP S5368010 A JPS5368010 A JP S5368010A
Authority
JP
Japan
Prior art keywords
trip circuit
ring trip
signal
line
ring
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
JP14309176A
Other languages
Japanese (ja)
Inventor
Yukio Kamiya
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 JP14309176A priority Critical patent/JPS5368010A/en
Publication of JPS5368010A publication Critical patent/JPS5368010A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To soften the limitation for the number of the telephone set which can be connected to the subscriber's line resistance and one signal call line, by performing a detection of the DC element for the signal line during a specified period of the signal voltage.
COPYRIGHT: (C)1978,JPO&Japio
JP14309176A 1976-11-29 1976-11-29 Ring trip circuit Pending JPS5368010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14309176A JPS5368010A (en) 1976-11-29 1976-11-29 Ring trip circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14309176A JPS5368010A (en) 1976-11-29 1976-11-29 Ring trip circuit

Publications (1)

Publication Number Publication Date
JPS5368010A true JPS5368010A (en) 1978-06-17

Family

ID=15330692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14309176A Pending JPS5368010A (en) 1976-11-29 1976-11-29 Ring trip circuit

Country Status (1)

Country Link
JP (1) JPS5368010A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207758A (en) * 1982-03-24 1983-12-03 シ・エツセ・エ・エレ・チ・セントロ・ステユデイ・エ・ラボラトリ・テレコミニカチオ−ニ・エツセ・ピ−・ア− Receiver pickup detecting circuit
JPS616961A (en) * 1984-03-26 1986-01-13 ジ−メンス・アクチエンゲゼルシヤフト Small scale telephone private exchange circuit device
JPS6277746A (en) * 1985-10-01 1987-04-09 Oki Electric Ind Co Ltd Ring trip system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207758A (en) * 1982-03-24 1983-12-03 シ・エツセ・エ・エレ・チ・セントロ・ステユデイ・エ・ラボラトリ・テレコミニカチオ−ニ・エツセ・ピ−・ア− Receiver pickup detecting circuit
JPS616961A (en) * 1984-03-26 1986-01-13 ジ−メンス・アクチエンゲゼルシヤフト Small scale telephone private exchange circuit device
JPS6277746A (en) * 1985-10-01 1987-04-09 Oki Electric Ind Co Ltd Ring trip system

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