JPS5247606A - Signal receiving circuit of switchboard equipment - Google Patents

Signal receiving circuit of switchboard equipment

Info

Publication number
JPS5247606A
JPS5247606A JP50123970A JP12397075A JPS5247606A JP S5247606 A JPS5247606 A JP S5247606A JP 50123970 A JP50123970 A JP 50123970A JP 12397075 A JP12397075 A JP 12397075A JP S5247606 A JPS5247606 A JP S5247606A
Authority
JP
Japan
Prior art keywords
signal receiving
receiving circuit
switchboard equipment
equipment
switchboard
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
JP50123970A
Other languages
Japanese (ja)
Other versions
JPS5444568B2 (en
Inventor
Munemasa Soma
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.)
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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 Iwatsu Electric Co Ltd, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Priority to JP50123970A priority Critical patent/JPS5247606A/en
Publication of JPS5247606A publication Critical patent/JPS5247606A/en
Publication of JPS5444568B2 publication Critical patent/JPS5444568B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling

Abstract

PURPOSE:To simplify the separation of DF and MF signals, etc. and make the related filter unnecessary, and intend to secure good performance, by fixing the hydrid circuit, etc. in the signal receiving circuit of the switchbaord equipment.
JP50123970A 1975-10-15 1975-10-15 Signal receiving circuit of switchboard equipment Granted JPS5247606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50123970A JPS5247606A (en) 1975-10-15 1975-10-15 Signal receiving circuit of switchboard equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50123970A JPS5247606A (en) 1975-10-15 1975-10-15 Signal receiving circuit of switchboard equipment

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP3724981A Division JPS56156081A (en) 1981-03-17 1981-03-17 Signal receiving circuit of exchanging device
JP23436783A Division JPS59131287A (en) 1983-12-14 1983-12-14 Signal receiving circuit in exchange

Publications (2)

Publication Number Publication Date
JPS5247606A true JPS5247606A (en) 1977-04-15
JPS5444568B2 JPS5444568B2 (en) 1979-12-26

Family

ID=14873811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50123970A Granted JPS5247606A (en) 1975-10-15 1975-10-15 Signal receiving circuit of switchboard equipment

Country Status (1)

Country Link
JP (1) JPS5247606A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156081A (en) * 1981-03-17 1981-12-02 Iwatsu Electric Co Ltd Signal receiving circuit of exchanging device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156081A (en) * 1981-03-17 1981-12-02 Iwatsu Electric Co Ltd Signal receiving circuit of exchanging device

Also Published As

Publication number Publication date
JPS5444568B2 (en) 1979-12-26

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