JPS5491011A - Recall system to originating request subscriber - Google Patents

Recall system to originating request subscriber

Info

Publication number
JPS5491011A
JPS5491011A JP15796277A JP15796277A JPS5491011A JP S5491011 A JPS5491011 A JP S5491011A JP 15796277 A JP15796277 A JP 15796277A JP 15796277 A JP15796277 A JP 15796277A JP S5491011 A JPS5491011 A JP S5491011A
Authority
JP
Japan
Prior art keywords
originating
main link
call
circuit
originating request
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
JP15796277A
Other languages
Japanese (ja)
Inventor
Kazuhiko Mitsunaga
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15796277A priority Critical patent/JPS5491011A/en
Publication of JPS5491011A publication Critical patent/JPS5491011A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To save troubles to an operator and originating requesting subscriber both at an originating request time, and to shorten a switching operation time by providing an additional circuit to a position outgoing trunk. CONSTITUTION:This system is equipped with the circuit which holds main link LF and the circuit which receives call-signal transmitting information while an originating request is being sent to position outgoing trunk POT equipped to main link LF. Then, main link LP is made not to be released even if originating requesting subscriber SUB makes an on-hook and receiving the call-signal transmitting information from an operator at attendant board ATT allows POT to send out a call signal to SUB in an on-hook state.
JP15796277A 1977-12-28 1977-12-28 Recall system to originating request subscriber Pending JPS5491011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15796277A JPS5491011A (en) 1977-12-28 1977-12-28 Recall system to originating request subscriber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15796277A JPS5491011A (en) 1977-12-28 1977-12-28 Recall system to originating request subscriber

Publications (1)

Publication Number Publication Date
JPS5491011A true JPS5491011A (en) 1979-07-19

Family

ID=15661247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15796277A Pending JPS5491011A (en) 1977-12-28 1977-12-28 Recall system to originating request subscriber

Country Status (1)

Country Link
JP (1) JPS5491011A (en)

Similar Documents

Publication Publication Date Title
JPS5462711A (en) Processing system for answer of private branch exchange
JPS5639670A (en) Circuit switching unit
JPS562778A (en) Data communication unit
JPS5491011A (en) Recall system to originating request subscriber
JPS5792965A (en) Data communication device
JPS5728493A (en) Automatic incoming system for extension
JPS5664554A (en) Exchange service control system
JPS5686596A (en) Transfer system of dial information
JPS53126202A (en) Composite data exchange system
JPS54143006A (en) Reporting system for registering release miss of incoming service
GB832591A (en) Improvements in or relating to devices for mounting a component
JPS5792959A (en) System for terminal test
JPS56132842A (en) Communication speed matching system
JPS5752257A (en) Calling control system
JPS5487105A (en) Connection circuit for dispatching telephone
JPS5765953A (en) Simple night transfer system
JPS55141885A (en) Transmission system for a number of information
JPS5516537A (en) Caretaking service communication system
JPS53131705A (en) Automatic telephone exchange system
JPS5724155A (en) Monitor system for call handled by attendant board
JPS5792990A (en) Electronic key telephone device
JPS5650692A (en) Sending system of push-button dial signal
JPS5586259A (en) Connection system of data transmitter-receiver
JPS5351904A (en) Subscriber circuit system both for telephone and data
JPS532011A (en) Calling signal and calling tone transmitting at telephone exchange