JPS53132922A - Originating system for multi-frequency signal - Google Patents

Originating system for multi-frequency signal

Info

Publication number
JPS53132922A
JPS53132922A JP4759977A JP4759977A JPS53132922A JP S53132922 A JPS53132922 A JP S53132922A JP 4759977 A JP4759977 A JP 4759977A JP 4759977 A JP4759977 A JP 4759977A JP S53132922 A JPS53132922 A JP S53132922A
Authority
JP
Japan
Prior art keywords
frequency signal
originating system
circuit
signal originating
frequency
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
JP4759977A
Other languages
Japanese (ja)
Inventor
Masaoki Ishiwatari
Katsuo Uyama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4759977A priority Critical patent/JPS53132922A/en
Publication of JPS53132922A publication Critical patent/JPS53132922A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

PURPOSE:To simplify a multi-frequency signal originating operation in the multi-frequency signal originating system of the channel board using an automatic telephone exchange, without superposing a sound noise upon a multi-frequency signal, by disconnecting a telephone-set network from the circuit while transmitting multi-frequency signals to the circuit.
JP4759977A 1977-04-25 1977-04-25 Originating system for multi-frequency signal Pending JPS53132922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4759977A JPS53132922A (en) 1977-04-25 1977-04-25 Originating system for multi-frequency signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4759977A JPS53132922A (en) 1977-04-25 1977-04-25 Originating system for multi-frequency signal

Publications (1)

Publication Number Publication Date
JPS53132922A true JPS53132922A (en) 1978-11-20

Family

ID=12779696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4759977A Pending JPS53132922A (en) 1977-04-25 1977-04-25 Originating system for multi-frequency signal

Country Status (1)

Country Link
JP (1) JPS53132922A (en)

Similar Documents

Publication Publication Date Title
JPS5421107A (en) Automatic response unit for telephone line
JPS53132922A (en) Originating system for multi-frequency signal
JPS5386502A (en) Control unit for telephone circuit netwoek
JPS53107209A (en) Various-signal transmission system of time-division exchange
JPS5338912A (en) Sending/stop system for signal sound
JPS53140002A (en) Echo adding device for stereophonic acoustic reproducing system of two channel type
JPS53108709A (en) Digital sound insertion system
JPS54162905A (en) Radiotelephony equipment
JPS5399803A (en) Separating signal system for subscriber's line
ES443673A1 (en) Telephone connector
JPS53110307A (en) Multi-frequency signal receiving system
JPS5396706A (en) Crosstalk listening prevention circuit for telephone set
JPS5439513A (en) Signal tone delivery system
JPS53105923A (en) Automatic test system for ringer
JPS53142106A (en) Voice answering system
JPS53111227A (en) Communication device for multiple access
JPS53110303A (en) Switching signal transmission system
JPS5440506A (en) First ringing control system for time-division exchange
JPS5232210A (en) Detection system for subscriber response signal
JPS53131706A (en) Automatic telephone exchange system
JPS523318A (en) Howler circuit
JPS53132936A (en) Double communication system
JPS53132907A (en) Cancellation circuit for crosstalk component of angle-modulated wave signal transmission line
JPS53126203A (en) Telephone set circuit
JPS5362402A (en) Loudening telephone unit