JPS54159806A - Ringing trunk - Google Patents

Ringing trunk

Info

Publication number
JPS54159806A
JPS54159806A JP6860378A JP6860378A JPS54159806A JP S54159806 A JPS54159806 A JP S54159806A JP 6860378 A JP6860378 A JP 6860378A JP 6860378 A JP6860378 A JP 6860378A JP S54159806 A JPS54159806 A JP S54159806A
Authority
JP
Japan
Prior art keywords
grounded
resistance
ringing
constitution
relay contact
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.)
Granted
Application number
JP6860378A
Other languages
Japanese (ja)
Other versions
JPS579265B2 (en
Inventor
Katsuaki Fuji
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6860378A priority Critical patent/JPS54159806A/en
Publication of JPS54159806A publication Critical patent/JPS54159806A/en
Publication of JPS579265B2 publication Critical patent/JPS579265B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To simplify constitution and improve reliability by controlling respective functions of calling of a called telephone set and response of a called receiver by one response detection element in the ringing trunk of the trip circuit of a telepone exchange.
CONSTITUTION: Capacitor CO and intra-office ringing source 16 Hz IR, diodes D1 and resistance R1, and diode DO and relay A are grounded through switching circuit 10 which is connected to signal transmission line A1 and consists of A relay contact a1 and R relay contact r. Further, resistance RO(3) and DC power source 4 are connected to signal line B1 and are grounded.
COPYRIGHT: (C)1979,JPO&Japio
JP6860378A 1978-06-07 1978-06-07 Ringing trunk Granted JPS54159806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6860378A JPS54159806A (en) 1978-06-07 1978-06-07 Ringing trunk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6860378A JPS54159806A (en) 1978-06-07 1978-06-07 Ringing trunk

Publications (2)

Publication Number Publication Date
JPS54159806A true JPS54159806A (en) 1979-12-18
JPS579265B2 JPS579265B2 (en) 1982-02-20

Family

ID=13378517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6860378A Granted JPS54159806A (en) 1978-06-07 1978-06-07 Ringing trunk

Country Status (1)

Country Link
JP (1) JPS54159806A (en)

Also Published As

Publication number Publication date
JPS579265B2 (en) 1982-02-20

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