JPS5356906A - Ring trip circuit - Google Patents

Ring trip circuit

Info

Publication number
JPS5356906A
JPS5356906A JP13189076A JP13189076A JPS5356906A JP S5356906 A JPS5356906 A JP S5356906A JP 13189076 A JP13189076 A JP 13189076A JP 13189076 A JP13189076 A JP 13189076A JP S5356906 A JPS5356906 A JP S5356906A
Authority
JP
Japan
Prior art keywords
ring trip
trip circuit
circuit
ring
polarity
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
JP13189076A
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 JP13189076A priority Critical patent/JPS5356906A/en
Publication of JPS5356906A publication Critical patent/JPS5356906A/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE: To make it possible to use one kind of circuit commonly even for a telephone exchange-where polarity of the service current is set arbitrarily-, by separating a DC components detection circuit and a ring trip circuit by using a photocoupling element.
COPYRIGHT: (C)1978,JPO&Japio
JP13189076A 1976-11-02 1976-11-02 Ring trip circuit Pending JPS5356906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13189076A JPS5356906A (en) 1976-11-02 1976-11-02 Ring trip circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13189076A JPS5356906A (en) 1976-11-02 1976-11-02 Ring trip circuit

Publications (1)

Publication Number Publication Date
JPS5356906A true JPS5356906A (en) 1978-05-23

Family

ID=15068531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13189076A Pending JPS5356906A (en) 1976-11-02 1976-11-02 Ring trip circuit

Country Status (1)

Country Link
JP (1) JPS5356906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0946417A (en) * 1995-07-28 1997-02-14 Nec Corp Ring trip circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS414665Y1 (en) * 1964-06-23 1966-03-16
US3865992A (en) * 1971-11-17 1975-02-11 Int Standard Electric Corp Electronically controlled ring-trap circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS414665Y1 (en) * 1964-06-23 1966-03-16
US3865992A (en) * 1971-11-17 1975-02-11 Int Standard Electric Corp Electronically controlled ring-trap circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0946417A (en) * 1995-07-28 1997-02-14 Nec Corp Ring trip circuit

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