Appeal No. 1997-2899
Application No. 08/385,574
to an alternate network without losing data in the event of a
network failure. As disclosed on pages 16 through 18 of the
specification, terminals 310 and 320 communicate with each
other through two independent networks 301 and 302 which
provide redundant communication paths for identical copies of
the signal transmitted simultaneously between the terminals.
Appellant on pages 19 and 20 discloses that a failure in any
of the networks causes a fault signal to be sent to both
terminals so that the receiving terminal can select the
information received from the alternate network.
Representative independent claim 24 is reproduced as
follows:
24. A first terminal for exchanging
information with a second terminal over a first
communications link and a second communications
link wherein the communications links are
configured in parallel between the first and
second terminals and are operable to transmit
the information, and wherein the first
communications link is operable to transmit a
fault indication signal upon detection of a
fault condition affecting the first
communications link, the first terminal
comprising:
a transmitting means for simultaneously
transmitting duplicate information to the second
terminal over the first communication link and
the second communication link; and
a receiving means for receiving duplicate
information from the second terminal over the
2
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