Wiring concentrator for data networks

Details Wiring concentrator for data networks Wiring concentrator for data networks

1992-06-09

1994-10-11

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

370 56, H04J 1400, H04J 302

Patent

active

053551249

ABSTRACT:
A wiring concentrator (160)for Fiber Distributed Data Interface (FDDI) networks employs only two PHY modules (182 and 184) for initialization of all attached stations (174, 176, 178, and 180). A bank of switches (204, 206, 208, and 210) initially switches one of the stations into full-duplex communication with one of the PHY modules (182), with which it performs the initialization process. The attached station (174, 176, 178, or 180) is then switched into a loop formed with the other PHY (184), in which loop the station remains in the active state that it reached as a result of the initialization process. The process is then repeated for each attached station. A separate PHY module thus is not required for every attached station.

REFERENCES:
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patent: 4951280 (1990-08-01), McCool et al.
patent: 5023872 (1991-06-01), Annamali
patent: 5043981 (1991-08-01), Firoozmand et al.
patent: 5058132 (1991-10-01), Li
patent: 5182747 (1993-01-01), Frenzel, III et al.
patent: 5210741 (1993-05-01), Grochmal

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