Multiplex communications – Wide area network – Packet switching
Patent
1988-09-30
1992-03-31
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 56, 370 8512, 34082505, H04L 1242, H04J 300
Patent
active
051014050
ABSTRACT:
A line concentrator used in a ring network system which has line concentrators for accommodating ring lobes, and a ring trunk cable connecting adjacent line concentrators, wherein a signal transmitted from an upstream line concentrator is sent via the ring trunk cable to the ring lobes of an immediately downstream line concentrator. The line concentrator is provided with a circuit for regenerating a signal on the ring trunk cable received by the line concentrator, and repeating and sending the regenerated signal to the ring lobes.
REFERENCES:
patent: 4402075 (1983-08-01), Bargeton et al.
patent: 4583088 (1986-04-01), Bux et al.
patent: 4663748 (1987-05-01), Karbowiak et al.
patent: 4777330 (1988-10-01), Nakayashiki et al.
IBM Technical Disclosure Bulletin, vol. 30, No. 2, Jul. 1987, "Token Ring Distance Extension".
"Local Area Network According to Token Ring Access Method", Bit (journal), vol. 16, No. 3, 1984.
"Token Ring Access Method and Physical Layer Specifications", IEEE Standard 802.5-1985 (pp. 23-25, 27, 37, 41-59, 76-87).
IEEE 802.5R Draft G, vol. 6 Draft Document on Reconfiguration Draft Version G-8, Sep. 86.
Bekki Yoshinori
Wada Hiroyuki
Hitachi , Ltd.
Hsu Alpus H.
Olms Douglas W.
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