JPS5769967A - Power supply device for telephone signal - Google Patents

Power supply device for telephone signal

Info

Publication number
JPS5769967A
JPS5769967A JP14566780A JP14566780A JPS5769967A JP S5769967 A JPS5769967 A JP S5769967A JP 14566780 A JP14566780 A JP 14566780A JP 14566780 A JP14566780 A JP 14566780A JP S5769967 A JPS5769967 A JP S5769967A
Authority
JP
Japan
Prior art keywords
call signal
signal
change
composite
time
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
JP14566780A
Other languages
Japanese (ja)
Other versions
JPS6322505B2 (en
Inventor
Koichi Kobayashi
Toshio Koizumi
Katsuo Kojima
Hidenori Hirose
Tomika Ukon
Teruo Yaoita
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
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
NEC Corp
Sanyo Electric Co Ltd
Nippon Electric Co Ltd
Sanyo Denki 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, Sanyo Electric Co Ltd, Nippon Electric Co Ltd, Sanyo Denki Co Ltd filed Critical NEC Corp
Priority to JP14566780A priority Critical patent/JPS5769967A/en
Publication of JPS5769967A publication Critical patent/JPS5769967A/en
Publication of JPS6322505B2 publication Critical patent/JPS6322505B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To perform the change in intermitting time and frequency with one device, by transmitting a composite call signal having the pattern overlapping in time a plurality of different call signals and a synchronizing signal synchronized with the composite call signal with a certain time relation. CONSTITUTION:In an electronic exchanger 6, a composite call signal and a synchronizing signal are received from a telephone signal power supply 1 via transmission lines 2 and 5. The electronic exchanger 6 forms grouped call signal to form it as the call signal from a subscriber of each group. On the other hand, the device 1 consists of a microprocessor 16, clock oscillator 14, memory circuit 15, and composite call signal generating circuit 13, and it stored the program in the microcomputer 12 to change the memory content of the memory circuit 15, allowing to change intermitting time or frequency by one set.
JP14566780A 1980-10-20 1980-10-20 Power supply device for telephone signal Granted JPS5769967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14566780A JPS5769967A (en) 1980-10-20 1980-10-20 Power supply device for telephone signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14566780A JPS5769967A (en) 1980-10-20 1980-10-20 Power supply device for telephone signal

Publications (2)

Publication Number Publication Date
JPS5769967A true JPS5769967A (en) 1982-04-30
JPS6322505B2 JPS6322505B2 (en) 1988-05-12

Family

ID=15390295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14566780A Granted JPS5769967A (en) 1980-10-20 1980-10-20 Power supply device for telephone signal

Country Status (1)

Country Link
JP (1) JPS5769967A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168364A (en) * 1982-03-29 1983-10-04 Fujitsu Ltd Ringing system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440506A (en) * 1977-09-07 1979-03-30 Hitachi Ltd First ringing control system for time-division exchange
JPS54121607A (en) * 1978-03-14 1979-09-20 Nec Corp Multi-frequency signal generating system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5440506A (en) * 1977-09-07 1979-03-30 Hitachi Ltd First ringing control system for time-division exchange
JPS54121607A (en) * 1978-03-14 1979-09-20 Nec Corp Multi-frequency signal generating system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168364A (en) * 1982-03-29 1983-10-04 Fujitsu Ltd Ringing system

Also Published As

Publication number Publication date
JPS6322505B2 (en) 1988-05-12

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