Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2005-12-01
2011-12-27
Ton, Dang (Department: 2475)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C340S003440
Reexamination Certificate
active
08085655
ABSTRACT:
A Fault Tolerant Dial Router (FTDR) includes redundant subsystem resources that operate independently of telephone line interface connections. The redundant resources are switched active when a failure is detected in an activated dial router subsystem. Switching out subsystem failures is fully automated under software control, providing uninterrupted service to users with limited performance loss. The FTDR includes a switching mechanism that selectively switches out the telephone interfaces or other subsystem resources inside the dial router box detected as having failures. The subsystem resources include line framers, controllers and modem modules.
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Stolowitz Ford Cowger LLP, Listing of Related Cases, Aug. 3, 2010.
Cisco Technology Inc.
Kavleski Ryan
Stolowitz Ford Cowger LLP
Ton Dang
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