JPS5216906A - Local line state lamp display circuit in key-telephone device - Google Patents

Local line state lamp display circuit in key-telephone device

Info

Publication number
JPS5216906A
JPS5216906A JP9208375A JP9208375A JPS5216906A JP S5216906 A JPS5216906 A JP S5216906A JP 9208375 A JP9208375 A JP 9208375A JP 9208375 A JP9208375 A JP 9208375A JP S5216906 A JPS5216906 A JP S5216906A
Authority
JP
Japan
Prior art keywords
display circuit
key
line state
lamp display
local 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.)
Granted
Application number
JP9208375A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5438001B2 (enrdf_load_stackoverflow
Inventor
Minoru Sasai
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.)
Kanda Tsushin Kogyo Co Ltd
Original Assignee
Kanda Tsushin Kogyo 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 Kanda Tsushin Kogyo Co Ltd filed Critical Kanda Tsushin Kogyo Co Ltd
Priority to JP9208375A priority Critical patent/JPS5216906A/ja
Priority to US05/707,324 priority patent/US4079212A/en
Publication of JPS5216906A publication Critical patent/JPS5216906A/ja
Publication of JPS5438001B2 publication Critical patent/JPS5438001B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP9208375A 1975-07-23 1975-07-30 Local line state lamp display circuit in key-telephone device Granted JPS5216906A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9208375A JPS5216906A (en) 1975-07-30 1975-07-30 Local line state lamp display circuit in key-telephone device
US05/707,324 US4079212A (en) 1975-07-23 1976-07-21 Extension telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9208375A JPS5216906A (en) 1975-07-30 1975-07-30 Local line state lamp display circuit in key-telephone device

Publications (2)

Publication Number Publication Date
JPS5216906A true JPS5216906A (en) 1977-02-08
JPS5438001B2 JPS5438001B2 (enrdf_load_stackoverflow) 1979-11-19

Family

ID=14044541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9208375A Granted JPS5216906A (en) 1975-07-23 1975-07-30 Local line state lamp display circuit in key-telephone device

Country Status (1)

Country Link
JP (1) JPS5216906A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53111211A (en) * 1977-03-10 1978-09-28 Kanda Tsushin Kogyo Kk Button telephone set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53111211A (en) * 1977-03-10 1978-09-28 Kanda Tsushin Kogyo Kk Button telephone set

Also Published As

Publication number Publication date
JPS5438001B2 (enrdf_load_stackoverflow) 1979-11-19

Similar Documents

Publication Publication Date Title
JPS5270780A (en) Manufacture of semiconductor device
GB1549314A (en) Luminous discharge display devices
JPS5329034A (en) Display area switching unit
HK14682A (en) Electronic display device
JPS5271152A (en) Computer
JPS5216906A (en) Local line state lamp display circuit in key-telephone device
JPS5223251A (en) Semiconductor circuit
JPS52152122A (en) Scrolling display
JPS51139799A (en) Liquid crystal display device
JPS51140490A (en) Lateral transistor
JPS5277569A (en) Logical circuit
JPS5210097A (en) Driving mechanism of display device
JPS52380A (en) Device for making wiring circuit
JPS51124973A (en) Temperature measurement apparatus
HK21880A (en) Improvements in display devices
JPS5228678A (en) Display device for pushhbutton
JPS51148335A (en) Memory circuit
JPS51120144A (en) Circuit module
JPS51111328A (en) Speaker-test device
JPS51146840A (en) Photogyrator circuit
JPS5274205A (en) Matrix driving system
JPS5260660A (en) Luminous indication circuit for clock
JPS51133783A (en) Dielectric line
JPS5257735A (en) Device for switching display
JPS5291613A (en) Electronic apparatus