Patent ID: 7289428

Claim:
In a communication system comprising a first network including a source arranged to transmit data and a second network including a destination arranged to receive the data, apparatus for communicating between the source and destination comprising: a first network and a second network, wherein at least one of said first network and said second network is a mesh network; a first primary node in the first network; a first secondary node in the first network; a second primary node in the second network; a second secondary node in the second network; a first set of primary routes within the first network arranged to deliver a first set of the data to the first primary node and a second set of the data to the first secondary node, wherein the second set of data comprises a copy of the first set of the data; a plurality of inter-network routes between the first and second networks arranged to deliver the first and second sets of the data to the second primary node and the second secondary node; a second set of primary routes within the second network arranged to deliver at least one of the first and second sets of data to the destination node; a selector within the second network arranged to select one of the first and second sets of data; a first secondary route within the first network between the source and the first secondary node; a first route selector arranged to select the first secondary route in the event that a primary route within the first set of primary routes is disabled; a second secondary route within the second network between the second secondary node and the destination; and a second route selector arranged to select the second secondary route in the event that a primary route within the second set of primary routes is disabled.