JPS55161493A - Line concentrating system - Google Patents

Line concentrating system

Info

Publication number
JPS55161493A
JPS55161493A JP6743079A JP6743079A JPS55161493A JP S55161493 A JPS55161493 A JP S55161493A JP 6743079 A JP6743079 A JP 6743079A JP 6743079 A JP6743079 A JP 6743079A JP S55161493 A JPS55161493 A JP S55161493A
Authority
JP
Japan
Prior art keywords
subscriber
lines
signal lines
stage
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.)
Granted
Application number
JP6743079A
Other languages
Japanese (ja)
Other versions
JPS6117439B2 (en
Inventor
Haruki Fukuda
Shogo Usuda
Hajime Yamada
Junji Asakura
Shiro Enami
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
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP6743079A priority Critical patent/JPS55161493A/en
Publication of JPS55161493A publication Critical patent/JPS55161493A/en
Publication of JPS6117439B2 publication Critical patent/JPS6117439B2/ja
Granted 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/60—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to satellites or concentrators which connect one or more exchange lines with a group of local lines
    • H04Q3/605—Arrangements in the satellite or concentrator

Abstract

PURPOSE:To simplify the constitution of the whole of the system and reduce the number of A/D and D/A converters to lower the cost, by storing different kinds of subscriber's line in space division line concentrating stages of the same constitution. CONSTITUTION:Low-calling rate subscriber 1 and high-calling rate subscriber 1' are connected to space division line concentrating stage 3 through subscriber's line 2 and 2' respectively. In this space division line concentrating stage 3, subscriber's lines are concentrated into signal lines less than subscriber's lines at a fixed line concentration ratio, for example, 2:1 or 4:1. Next, respective signal lines are connected to subscriber's circuits (not shown in the figure) and A/D and D/A converters 4. Signal lines corresponding to low-calling rate subscriber's lines are connected to time division line concentration stage 5 and are connected to multiplexing part 6 after concentrated to less signal lines at a line concentration ratio, for example, 5:1. Signal lines corresponding to high-calling rate subscriber's lines are connected to multiplexing part 6 directly. Then, the multiplexed signal is stored in distributing stage 7.
JP6743079A 1979-06-01 1979-06-01 Line concentrating system Granted JPS55161493A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6743079A JPS55161493A (en) 1979-06-01 1979-06-01 Line concentrating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6743079A JPS55161493A (en) 1979-06-01 1979-06-01 Line concentrating system

Publications (2)

Publication Number Publication Date
JPS55161493A true JPS55161493A (en) 1980-12-16
JPS6117439B2 JPS6117439B2 (en) 1986-05-07

Family

ID=13344678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6743079A Granted JPS55161493A (en) 1979-06-01 1979-06-01 Line concentrating system

Country Status (1)

Country Link
JP (1) JPS55161493A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848592A (en) * 1981-09-18 1983-03-22 Nippon Telegr & Teleph Corp <Ntt> Composite line concentration system
JPS58151194A (en) * 1982-03-03 1983-09-08 Nec Corp Remote subscriber line concentrator
US4618412A (en) * 1985-07-31 1986-10-21 Exxon Research And Engineering Co. Hydrocracking process
US4664777A (en) * 1984-07-30 1987-05-12 Exxon Research And Engineering Company Process for improving octane by the conversion of fused multi-ring aromatics and hydroaromatics to lower molecular weight compounds

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848592A (en) * 1981-09-18 1983-03-22 Nippon Telegr & Teleph Corp <Ntt> Composite line concentration system
EP0075305A2 (en) * 1981-09-18 1983-03-30 Nippon Telegraph And Telephone Corporation Composite concentration system
JPS58151194A (en) * 1982-03-03 1983-09-08 Nec Corp Remote subscriber line concentrator
US4664777A (en) * 1984-07-30 1987-05-12 Exxon Research And Engineering Company Process for improving octane by the conversion of fused multi-ring aromatics and hydroaromatics to lower molecular weight compounds
US4618412A (en) * 1985-07-31 1986-10-21 Exxon Research And Engineering Co. Hydrocracking process

Also Published As

Publication number Publication date
JPS6117439B2 (en) 1986-05-07

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