(under subclass 238) Subject matter further comprising means or steps for selecting a substitute path when a desired path is unavailable (e.g., blocked path).
SEE OR SEARCH CLASS
340, Communications: Electrical,
825+, for selective communications, particularly subclass 825.01 for spare channel selecting.
370, Multiplex Communications,
216+, for fault recovery in a multiplex switching system.
379, Telephonic Communications, particularly
221, and 273+ for alternate routing in a telephone system.
