Multiplex communications – Wide area network – Packet switching
Patent
1988-12-20
1992-02-04
Lee, Thomas C.
Multiplex communications
Wide area network
Packet switching
370 8514, 370 851, 370 941, 364200, 3642408, 36494081, 36494062, 364DIG1, 364DIG2, 395325, H04J 302, H04J 326
Patent
active
050864262
ABSTRACT:
In a network system comprising a plurality of secondary LAN's of different types operable at a relatively low speed, a single primary LAN accommodating the secondary LAN's and operable at a relatively high speed, and a plurality of bridges for connecting the primary LAN and the secondary LAN's, a communication frame transmitting on the primary LAN includes an identifier representative of the type of a secondary LAN to which a source terminal belongs and a bridge receiving the primary LAN frame carries out a protocol processing on the basis of the identifier representative of the type of the secondary LAN.
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Kusaka Kenji
Takahashi Yasuhiro
Terada Matsuaki
Tsukakoshi Masato
Geckil Mehmet
Hitachi , Ltd.
Lee Thomas C.
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