JPS52127003A - Communication control device for switching lines - Google Patents

Communication control device for switching lines

Info

Publication number
JPS52127003A
JPS52127003A JP4354976A JP4354976A JPS52127003A JP S52127003 A JPS52127003 A JP S52127003A JP 4354976 A JP4354976 A JP 4354976A JP 4354976 A JP4354976 A JP 4354976A JP S52127003 A JPS52127003 A JP S52127003A
Authority
JP
Japan
Prior art keywords
control device
communication control
switching lines
switching
lines
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
JP4354976A
Other languages
Japanese (ja)
Other versions
JPS5528633B2 (en
Inventor
Masamichi Koyama
Nobuhiro Koyama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4354976A priority Critical patent/JPS52127003A/en
Publication of JPS52127003A publication Critical patent/JPS52127003A/en
Publication of JPS5528633B2 publication Critical patent/JPS5528633B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor

Abstract

PURPOSE:To eliminate the use of external testers and enable rapid test by the use of a program in a processor connected to the communication controller.
JP4354976A 1976-04-19 1976-04-19 Communication control device for switching lines Granted JPS52127003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4354976A JPS52127003A (en) 1976-04-19 1976-04-19 Communication control device for switching lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4354976A JPS52127003A (en) 1976-04-19 1976-04-19 Communication control device for switching lines

Publications (2)

Publication Number Publication Date
JPS52127003A true JPS52127003A (en) 1977-10-25
JPS5528633B2 JPS5528633B2 (en) 1980-07-29

Family

ID=12666827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4354976A Granted JPS52127003A (en) 1976-04-19 1976-04-19 Communication control device for switching lines

Country Status (1)

Country Link
JP (1) JPS52127003A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120255A (en) * 1979-03-08 1980-09-16 Nec Corp Communication controller
JPS58173958U (en) * 1983-04-07 1983-11-21 株式会社田村電機製作所 Malfunction alert public telephone
JPS5984956U (en) * 1983-09-24 1984-06-08 株式会社田村電機製作所 Public telephone failure monitoring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55120255A (en) * 1979-03-08 1980-09-16 Nec Corp Communication controller
JPS58173958U (en) * 1983-04-07 1983-11-21 株式会社田村電機製作所 Malfunction alert public telephone
JPS6115645Y2 (en) * 1983-04-07 1986-05-15
JPS5984956U (en) * 1983-09-24 1984-06-08 株式会社田村電機製作所 Public telephone failure monitoring device
JPS6115647Y2 (en) * 1983-09-24 1986-05-15

Also Published As

Publication number Publication date
JPS5528633B2 (en) 1980-07-29

Similar Documents

Publication Publication Date Title
JPS5233734A (en) Device for detecting and controlling density
JPS5329034A (en) Display area switching unit
JPS52127003A (en) Communication control device for switching lines
JPS5367076A (en) Control valve device
JPS5385595A (en) Control device for use in electrospark working device
JPS53133742A (en) Enclosed switchboard
JPS5324127A (en) Control valve device
JPS53139074A (en) Numerical control device
JPS52144577A (en) Control system of numerical controlled machine tool device which has industrial robot
JPS5325781A (en) Display of sequence controller
JPS5295912A (en) Echo cancelling device
JPS52130653A (en) Status detecting apparatus
JPS5333510A (en) Semiconductor channel switch
JPS5322972A (en) Control apparatus using computer
JPS53133003A (en) Stick position detecting system of 4-channel panning-potentiometer
JPS5357383A (en) Sequencial controller
JPS5325925A (en) Valve control device
JPS5390579A (en) Control observation device
JPS5387641A (en) Voltage margin testing unit
JPS53136454A (en) Test unit for microprocessor
AU243342B2 (en) Improvements in or relating toa switching device including a photo-resistor
JPS52140217A (en) Test equipment
JPS52153137A (en) Coupler circuit for remote carrier supervisory control device
JPS5377179A (en) Testing apparatus
AU6275160A (en) Improvements in or relating toa switching device including a photo-resistor