JPS5528606A - Transmission system of subscriber line - Google Patents

Transmission system of subscriber line

Info

Publication number
JPS5528606A
JPS5528606A JP10154278A JP10154278A JPS5528606A JP S5528606 A JPS5528606 A JP S5528606A JP 10154278 A JP10154278 A JP 10154278A JP 10154278 A JP10154278 A JP 10154278A JP S5528606 A JPS5528606 A JP S5528606A
Authority
JP
Japan
Prior art keywords
line
coupled
pass filter
subscriber
exchanger
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
JP10154278A
Other languages
English (en)
Inventor
Hishiichi Komiya
Tomoji Inoue
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10154278A priority Critical patent/JPS5528606A/ja
Publication of JPS5528606A publication Critical patent/JPS5528606A/ja
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
JP10154278A 1978-08-21 1978-08-21 Transmission system of subscriber line Pending JPS5528606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10154278A JPS5528606A (en) 1978-08-21 1978-08-21 Transmission system of subscriber line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10154278A JPS5528606A (en) 1978-08-21 1978-08-21 Transmission system of subscriber line

Publications (1)

Publication Number Publication Date
JPS5528606A true JPS5528606A (en) 1980-02-29

Family

ID=14303314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10154278A Pending JPS5528606A (en) 1978-08-21 1978-08-21 Transmission system of subscriber line

Country Status (1)

Country Link
JP (1) JPS5528606A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5684064A (en) * 1979-11-19 1981-07-09 Cselt Centro Studi Lab Telecom Device for exchanging and broadcasting information with subscriber*s telephone channel network
JPS57104359A (en) * 1980-10-24 1982-06-29 Siemens Ag Telephone subscriber circuit
JPS57178409A (en) * 1981-04-06 1982-11-02 Northern Telecom Ltd Filter with reactive component and method and device for deciding impedance thereof
JPS57181259A (en) * 1981-04-30 1982-11-08 Nippon Telegr & Teleph Corp <Ntt> Audio out-band signal transmission and reception system
JPS58143663A (ja) * 1982-02-22 1983-08-26 ミテル・コ−ポレ−シヨン 音声とデ−タの伝送方法および伝送システム
JPS6367066A (ja) * 1984-09-07 1988-03-25 アルカテル・エヌ・ブイ 電話線路を利用した情報伝送システム
JPS63198464A (ja) * 1987-02-12 1988-08-17 Nippon Telegr & Teleph Corp <Ntt> 情報送受信装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5684064A (en) * 1979-11-19 1981-07-09 Cselt Centro Studi Lab Telecom Device for exchanging and broadcasting information with subscriber*s telephone channel network
JPH0132696B2 (ja) * 1979-11-19 1989-07-10 Kuseruto Chentoro Suteyudei E Lab Terekomyunikatsuiooni Spa
JPS57104359A (en) * 1980-10-24 1982-06-29 Siemens Ag Telephone subscriber circuit
JPS57178409A (en) * 1981-04-06 1982-11-02 Northern Telecom Ltd Filter with reactive component and method and device for deciding impedance thereof
JPS57181259A (en) * 1981-04-30 1982-11-08 Nippon Telegr & Teleph Corp <Ntt> Audio out-band signal transmission and reception system
JPS58143663A (ja) * 1982-02-22 1983-08-26 ミテル・コ−ポレ−シヨン 音声とデ−タの伝送方法および伝送システム
JPH0584101B2 (ja) * 1982-02-22 1993-11-30 Mitel Corp
JPS6367066A (ja) * 1984-09-07 1988-03-25 アルカテル・エヌ・ブイ 電話線路を利用した情報伝送システム
JPS63198464A (ja) * 1987-02-12 1988-08-17 Nippon Telegr & Teleph Corp <Ntt> 情報送受信装置

Similar Documents

Publication Publication Date Title
EP0139405A3 (en) Data transmission system
IE780435L (en) Subscriber line/trunk circuit
GB1402160A (en) Telephone systems
GB1359700A (en) Simultaneous digital transmission in both directions over one line
JPS5528606A (en) Transmission system of subscriber line
GB1274810A (en) Network connection circuitry
GB1049412A (en) Improvements in or relating to electric circuits for use in signalling systems
JPS5725731A (en) Hybrid circuit
GB931052A (en) Improvements in or relating to time division communication systems
JPS56164645A (en) Branch relaying system
JPS56125120A (en) Voice duplicate communication system
JPS6490601A (en) Frequency channel branching filter
JPS5493912A (en) Communication system
JPS54130819A (en) Two-way variable gain amplifier
GB1176434A (en) Ladder Network Filter Arrangements
JPS579156A (en) Connecting system for telephone device
GB2003704A (en) Digital data signalling systems
JPS56119539A (en) Four-wire transmission system
JPS5793769A (en) Transmitter for audio and data signals
ES8502829A1 (es) Perfeccionamientos introducidos en un aparato electronico de filtrado
GB1526673A (en) Voice signal filtering device
JPS56115017A (en) Branching device
JPS5590172A (en) Multiplex communication system for sound signal and data for telephone call or signal for picture communication of electric communication circuit for narrow-band transmission
Strehl Digital Communications Transmission System
JPS5556709A (en) Amplification system