JPS5240006A - Non-response transmission system - Google Patents

Non-response transmission system

Info

Publication number
JPS5240006A
JPS5240006A JP11560475A JP11560475A JPS5240006A JP S5240006 A JPS5240006 A JP S5240006A JP 11560475 A JP11560475 A JP 11560475A JP 11560475 A JP11560475 A JP 11560475A JP S5240006 A JPS5240006 A JP S5240006A
Authority
JP
Japan
Prior art keywords
transmission system
response transmission
response
board
ringing
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
JP11560475A
Other languages
Japanese (ja)
Inventor
Akira Fujii
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 JP11560475A priority Critical patent/JPS5240006A/en
Publication of JPS5240006A publication Critical patent/JPS5240006A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/54—Arrangements for diverting calls for one subscriber to another predetermined subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:The ringing of non-response telephone cab be stopped after response by B board due to operation of B board.
JP11560475A 1975-09-26 1975-09-26 Non-response transmission system Pending JPS5240006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11560475A JPS5240006A (en) 1975-09-26 1975-09-26 Non-response transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11560475A JPS5240006A (en) 1975-09-26 1975-09-26 Non-response transmission system

Publications (1)

Publication Number Publication Date
JPS5240006A true JPS5240006A (en) 1977-03-28

Family

ID=14666732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11560475A Pending JPS5240006A (en) 1975-09-26 1975-09-26 Non-response transmission system

Country Status (1)

Country Link
JP (1) JPS5240006A (en)

Similar Documents

Publication Publication Date Title
JPS51144111A (en) Echo cancelling method
JPS5240006A (en) Non-response transmission system
JPS51114003A (en) Automatic information unit
JPS5223287A (en) Electronic chime
JPS51128208A (en) Idling power saving
JPS51134505A (en) Automatic telephone volume control according to the ambient noises
JPS527610A (en) Telephone responding system
JPS5261903A (en) Telephone no. deigita lindicator
JPS5355905A (en) Automatic dialing system
JPS523319A (en) Crosstalk reduction system
JPS5274201A (en) Display control circuit for key telephone system
JPS51144504A (en) Telephone set
JPS5223249A (en) Relay flip-flop circuit
JPS51138310A (en) Ringing signal sending system
JPS5396704A (en) Anti-side tone circuit
JPS5238785A (en) Electronic flaalsher
JPS5397311A (en) Continuity test system for subscriber circuit
JPS5367303A (en) Automatic terminating system for specified extension
JPS5368007A (en) B board k-charging system
JPS51112108A (en) Adaptive echo suppressing system
JPS5238801A (en) Automatic call connection device
JPS5213707A (en) Privacy system in key telephone system
JPS5396705A (en) Anti-side tone circuit
JPS5626118B2 (en)
JPS51132904A (en) Light transmission apparatus