JPS5657376A - Control system for digital transmission loss insertion - Google Patents

Control system for digital transmission loss insertion

Info

Publication number
JPS5657376A
JPS5657376A JP13448379A JP13448379A JPS5657376A JP S5657376 A JPS5657376 A JP S5657376A JP 13448379 A JP13448379 A JP 13448379A JP 13448379 A JP13448379 A JP 13448379A JP S5657376 A JPS5657376 A JP S5657376A
Authority
JP
Japan
Prior art keywords
terminal
time
division
transmission loss
connection line
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
JP13448379A
Other languages
Japanese (ja)
Inventor
Takuto Kojima
Hisao Kono
Masaaki Ito
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 JP13448379A priority Critical patent/JPS5657376A/en
Publication of JPS5657376A publication Critical patent/JPS5657376A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To simplify not only the consitution of the loss inserting device but the control of the transmission loss insertion, by forming a connection line which passes through in the desired member of times the loss inserting device provided at the connection line passing through a specified terminal. CONSTITUTION:The folded terminal circuit of the demultiplexers DMPX1- DMPXm is provided to the terminal 1 of the multiplexers MPX1-MPXm of the time-division talking network. And thus a folded connection is given by the terminal 1 and via the time-division talking network. And the time-division digital fixed transmission loss devices EDP1-EDPm are provided at the connection line passing through the terminal 1, and then a connection line is formed to be made to pass through in the desired member of times the above loss inserting devices. Thus the time-division talking network is controlled. In this way, the constitution of the loss inserting device can be simplified, at the same time ensuring a simple control of the transmission loss insertion.
JP13448379A 1979-10-17 1979-10-17 Control system for digital transmission loss insertion Pending JPS5657376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13448379A JPS5657376A (en) 1979-10-17 1979-10-17 Control system for digital transmission loss insertion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13448379A JPS5657376A (en) 1979-10-17 1979-10-17 Control system for digital transmission loss insertion

Publications (1)

Publication Number Publication Date
JPS5657376A true JPS5657376A (en) 1981-05-19

Family

ID=15129375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13448379A Pending JPS5657376A (en) 1979-10-17 1979-10-17 Control system for digital transmission loss insertion

Country Status (1)

Country Link
JP (1) JPS5657376A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210760A (en) * 1983-03-01 1984-11-29 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Hand-free telephone system
JPH01212169A (en) * 1988-02-19 1989-08-25 Canon Inc System for adjusting signal level in exchange

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59210760A (en) * 1983-03-01 1984-11-29 インタ−ナシヨナル・スタンダ−ド・エレクトリツク・コ−ポレイシヨン Hand-free telephone system
JPH01212169A (en) * 1988-02-19 1989-08-25 Canon Inc System for adjusting signal level in exchange
JPH07118752B2 (en) * 1988-02-19 1995-12-18 キヤノン株式会社 Telephone switching equipment

Similar Documents

Publication Publication Date Title
JPS5477013A (en) Transmission system for picture sound
JPS55117357A (en) Time-division multiplex communication system
IL60899A (en) Time slot multiple circuit for the selective establishment of connections in a t.d.m.digital telecommunications system
ZA806114B (en) Switching network test system
ZA792960B (en) An indirectly controlled telecommunications exchange with time channel connection paths led via time channel couplers,in particular,telephone systems
JPS5657377A (en) Signal control system
PH16521A (en) Integrated telephone transmission and switching system
DE2962881D1 (en) Method and circuit for establishing conference connections in a pcm-time multiplex switching system
JPS5550769A (en) Transmission bridge for subscriber circuit
JPS5657376A (en) Control system for digital transmission loss insertion
JPS52139302A (en) Automatic circuit switching unit
JPS5474615A (en) Test system for digital line
JPS574636A (en) Composite exchange system
JPS52103904A (en) Network for connecting pcmtdm automatic telephone switching system
GB2078064B (en) Communication control device in a duplex transmission network
JPS55105466A (en) Exchange system
JPS5427702A (en) Overall digital switchboard
JPS54139410A (en) Subscriber*s circuit device energized through connecting line and having selector for communication device
JPS5438732A (en) Input/output order accepting system
JPS55130215A (en) Variable equalizing circuit network
JPS57142064A (en) Network test system
JPS5416945A (en) Signal transmission system
JPS5657375A (en) Signal control system
JPS5355905A (en) Automatic dialing system
JPS52147424A (en) Diaphragm device for the copier of variable magnification slit exposure type