Multiplex communications – Wide area network – Packet switching
Patent
1988-11-14
1991-04-16
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 84, 370 851, 370 853, 370 854, 370 855, 370 941, 370 943, 3408255, 34082552, H04J 302, H04J 324
Patent
active
050088793
ABSTRACT:
Two different communication protocols are interoperatively combined for use in a local area network (LAN). An enhanced protocol can be selected as an alternative to a common protocol during communication between enhanced nodes of the LAN. Signals communicated between nodes of the LAN in the first and second protocols create the appearance of valid activity in both protocols, and always communicate at least some valid information in one of the protocols and selectively communicate additional valid information in a second protocol. Preferably the signals applied in the second or enhanced protocol include signals which are inserted in such a way that they are transparent to the first protocol. Improved network management capabilities and data transfer rates are available as a result of the information communicated in the second protocol.
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Cox William M.
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Datapoint Corporation
Hsu Alpus H.
Ley John R.
Olms Douglas W.
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