JPS5745771A - Transmission circuit for outgoing restricting signal - Google Patents

Transmission circuit for outgoing restricting signal

Info

Publication number
JPS5745771A
JPS5745771A JP55121522A JP12152280A JPS5745771A JP S5745771 A JPS5745771 A JP S5745771A JP 55121522 A JP55121522 A JP 55121522A JP 12152280 A JP12152280 A JP 12152280A JP S5745771 A JPS5745771 A JP S5745771A
Authority
JP
Japan
Prior art keywords
outgoing
subscriber
wire side
wire
restriction signal
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
JP55121522A
Other languages
Japanese (ja)
Inventor
Minoru Unzai
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 JP55121522A priority Critical patent/JPS5745771A/en
Publication of JPS5745771A publication Critical patent/JPS5745771A/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 make unnecessary the impedance matching of a subscriber and to enable to supply an outgoing restriction signal through a low power supply source, by transmitting the restriction signal from a 4-wire side reception terminal of the subscriber circuit. CONSTITUTION:A telephone set 21 is connected to a 2-wire side terminal of a subscriber circuit 22 having 2-wire - 4-wire conversion function, and a switch 23 is connected in series with a 4-wire side reception terminal, and an overvoltage preventing varistor 25 and an outgoing restriction signal source 26 are connected to an amplification factor adjusting resistor 24 connected to the teminal of the switch 23. The input impedance of 4-wire side is taken as a high impedance. If the transmission of the outgoing restriction is required, the signal transmission relay 23 is closed, allowing to transmit the outgoing restriction signal to a subscriber 21 via a subscriber circuit 22 with a low power.
JP55121522A 1980-09-02 1980-09-02 Transmission circuit for outgoing restricting signal Pending JPS5745771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55121522A JPS5745771A (en) 1980-09-02 1980-09-02 Transmission circuit for outgoing restricting signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55121522A JPS5745771A (en) 1980-09-02 1980-09-02 Transmission circuit for outgoing restricting signal

Publications (1)

Publication Number Publication Date
JPS5745771A true JPS5745771A (en) 1982-03-15

Family

ID=14813301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55121522A Pending JPS5745771A (en) 1980-09-02 1980-09-02 Transmission circuit for outgoing restricting signal

Country Status (1)

Country Link
JP (1) JPS5745771A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852104A (en) * 1971-10-30 1973-07-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4852104A (en) * 1971-10-30 1973-07-21

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