Abstract: An apparatus is provided for receiving at least one respective packet of signals from a node included in a collection of nodes and for providing at least one respective packet of signals to another node included in the collection, wherein the respective received and provided packets of signals include respective routing signals for respectively routing the respective received and provided packets among the nodes in the collection, said apparatus comprising: first means for receiving first signals modulated with respective packets of signals, the respective received packets including respective routing signals; second means for modifying respective routing signals included in at least one of the respective received packets and for providing at least one respective modified packet of signals including the respective modified routing signals; third means for providing second signals modulated with the at least one respective modified packet of signals; and fourth means for capturing the first signals, for provid