JPS51144506A - Reception number counter - Google Patents

Reception number counter

Info

Publication number
JPS51144506A
JPS51144506A JP6875375A JP6875375A JPS51144506A JP S51144506 A JPS51144506 A JP S51144506A JP 6875375 A JP6875375 A JP 6875375A JP 6875375 A JP6875375 A JP 6875375A JP S51144506 A JPS51144506 A JP S51144506A
Authority
JP
Japan
Prior art keywords
reception number
number counter
reception
telephone
working
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
JP6875375A
Other languages
Japanese (ja)
Inventor
Koichi Ooyama
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 JP6875375A priority Critical patent/JPS51144506A/en
Publication of JPS51144506A publication Critical patent/JPS51144506A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:Sequentially counting a reception number without working to a telephone or its circuit.
JP6875375A 1975-06-06 1975-06-06 Reception number counter Pending JPS51144506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6875375A JPS51144506A (en) 1975-06-06 1975-06-06 Reception number counter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6875375A JPS51144506A (en) 1975-06-06 1975-06-06 Reception number counter

Publications (1)

Publication Number Publication Date
JPS51144506A true JPS51144506A (en) 1976-12-11

Family

ID=13382828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6875375A Pending JPS51144506A (en) 1975-06-06 1975-06-06 Reception number counter

Country Status (1)

Country Link
JP (1) JPS51144506A (en)

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