JPS57107655A - Line concentrating connection system - Google Patents

Line concentrating connection system

Info

Publication number
JPS57107655A
JPS57107655A JP18492680A JP18492680A JPS57107655A JP S57107655 A JPS57107655 A JP S57107655A JP 18492680 A JP18492680 A JP 18492680A JP 18492680 A JP18492680 A JP 18492680A JP S57107655 A JPS57107655 A JP S57107655A
Authority
JP
Japan
Prior art keywords
line
circuit
information
concentrator
timing signal
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
JP18492680A
Other languages
Japanese (ja)
Inventor
Shufu Kusayanagi
Naruhiro Hayashi
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 JP18492680A priority Critical patent/JPS57107655A/en
Publication of JPS57107655A publication Critical patent/JPS57107655A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks

Abstract

PURPOSE:To realize a loop transmission system enabled for efficient line concentration connection, by normally transmitting line occupying information represent ing the properity of communication at each line concentrator to each terminal station. CONSTITUTION:Each line concentrator (not shown) checks the line occupancy in the own group at every line concentration group, this information is superimposed on a specific location of a transmission frame and transmtted on a loop transmission line 1. On the other hand, this transmission frame is received at a frame reception circuit 2 at a terminal station and applied to a frame separation circuit 5. A timing signal 1 from a bit counter 4 is applied to a separation circuit 5, and the said line occupancy information is separated based on this timing signal. This line occupancy information is stored in a line occupancy information storage circut 6 according to a timing signal, and this storage output is applied to an address generating circuit 8. Since the storage circuit 6 and the circuit 8 are provided corresponding to each line concentrator, each terminal device can transmit calling information to a line concentrator with a vacant line immediately.
JP18492680A 1980-12-25 1980-12-25 Line concentrating connection system Pending JPS57107655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18492680A JPS57107655A (en) 1980-12-25 1980-12-25 Line concentrating connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18492680A JPS57107655A (en) 1980-12-25 1980-12-25 Line concentrating connection system

Publications (1)

Publication Number Publication Date
JPS57107655A true JPS57107655A (en) 1982-07-05

Family

ID=16161747

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18492680A Pending JPS57107655A (en) 1980-12-25 1980-12-25 Line concentrating connection system

Country Status (1)

Country Link
JP (1) JPS57107655A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143097A (en) * 1984-08-06 1986-03-01 Hitachi Ltd Control of line concentration
JPS62189896A (en) * 1986-01-31 1987-08-19 シーメンス・ニックスドルフ・インフォメーションシステム・アクチェンゲゼルシャフト Method of integrating one or a plurality of additional function modules in remote communication system and one or aplurality of additional function modules used in integration

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53142804A (en) * 1977-05-18 1978-12-12 Mitsubishi Electric Corp Control system for in-plant delivery system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53142804A (en) * 1977-05-18 1978-12-12 Mitsubishi Electric Corp Control system for in-plant delivery system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143097A (en) * 1984-08-06 1986-03-01 Hitachi Ltd Control of line concentration
JPS62189896A (en) * 1986-01-31 1987-08-19 シーメンス・ニックスドルフ・インフォメーションシステム・アクチェンゲゼルシャフト Method of integrating one or a plurality of additional function modules in remote communication system and one or aplurality of additional function modules used in integration
JPH0523679B2 (en) * 1986-01-31 1993-04-05 Jiimensu Nitsukusudorufu Infuomeeshonshisutemu Ag

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