The inter-system bonding termination (IBT) is where other services like telephone and cable TV get their ground bonds from the house's grounding electrode system (ground rods).
2014 NEC (NJ) 250.94 seems to say that an IBT must be placed in proximity to the house service. My home currently has a main panel with main breaker as the service disconnect. I am in the process of installing a whole-house transfer switch for a generator, which then becomes the service entrance equipment. My understanding is that the wire between the transfer switch and main panel becomes a feeder in that case (and necessitates isolating neutral and ground, etc.)
Am I required to relocate the IBT to near the new transfer switch, which is about 60 ft away on a different location on the house closer by the generator? (There was no additional room in the utility room for the transfer switch, so it is being mounted in a protected location outdoors.) All of the communications wires for the house already terminate by the existing IBT, so this would result in a rats nest of 5-6 wires having to be spliced and then traveling over to the new IBT location. For all practical purposes, this seems like a bad idea.