JPS6481558A - Telephone call circuit - Google Patents

Telephone call circuit

Info

Publication number
JPS6481558A
JPS6481558A JP62237420A JP23742087A JPS6481558A JP S6481558 A JPS6481558 A JP S6481558A JP 62237420 A JP62237420 A JP 62237420A JP 23742087 A JP23742087 A JP 23742087A JP S6481558 A JPS6481558 A JP S6481558A
Authority
JP
Japan
Prior art keywords
call circuit
manager
call
bridge rectifier
line
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
JP62237420A
Other languages
Japanese (ja)
Inventor
Ikuo Sakaguchi
Tomoji Suda
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 Platforms Ltd
NEC Corp
Original Assignee
NEC Corp
NEC AccessTechnica 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, NEC AccessTechnica Ltd filed Critical NEC Corp
Priority to JP62237420A priority Critical patent/JPS6481558A/en
Publication of JPS6481558A publication Critical patent/JPS6481558A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

PURPOSE:To offer a telephone call circuit with a simple structure and low-cost by providing a power capacitor discharge resistor to prevent ringing to a brake contact of a trunk bell switch provided on a trunk line telephone call circuit. CONSTITUTION:Since a manager telephone set call circuit section 6 is connected to a bridge rectifier 11 with a manager bell switch turned on, when a call signal is applied to line terminals 1, 2, call circuits 5, 6 are rung. A discharge resistor 16 is disconnected from a line of the bridge rectifier 11 and power loss is reduced. when a dial pulse is outputted, the terminal voltage of the power capacitor 14 rises to avoid self-ringing or resonance of the sections 5, 6. An AC call signal applied to the line terminals 1, 2 rings a secretary telephone set call circuit section 5 via a capacitor 12, a resistor 13, a bridge rectifier 11 and a power capacitor 14 with the manager bell switch turned off.
JP62237420A 1987-09-24 1987-09-24 Telephone call circuit Pending JPS6481558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62237420A JPS6481558A (en) 1987-09-24 1987-09-24 Telephone call circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62237420A JPS6481558A (en) 1987-09-24 1987-09-24 Telephone call circuit

Publications (1)

Publication Number Publication Date
JPS6481558A true JPS6481558A (en) 1989-03-27

Family

ID=17015093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62237420A Pending JPS6481558A (en) 1987-09-24 1987-09-24 Telephone call circuit

Country Status (1)

Country Link
JP (1) JPS6481558A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729808A1 (en) * 1995-01-25 1996-07-26 Alcatel Business Systems METHOD OF ESTABLISHING COMMUNICATION BETWEEN TWO TERMINALS, OF THE ISDN TYPE, USING AN ASSISTANCE TERMINAL, TERMINALS AND CONNECTION STRUCTURE FOR CARRYING OUT SAID METHOD

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729808A1 (en) * 1995-01-25 1996-07-26 Alcatel Business Systems METHOD OF ESTABLISHING COMMUNICATION BETWEEN TWO TERMINALS, OF THE ISDN TYPE, USING AN ASSISTANCE TERMINAL, TERMINALS AND CONNECTION STRUCTURE FOR CARRYING OUT SAID METHOD
EP0724375A1 (en) * 1995-01-25 1996-07-31 Alcatel Business Systems Method of establishing a connection between two ISDN terminals with intervention by a supporting terminal

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