License key required to activate the"Network Application Interface for Data"feature in a DR 3000 / SLR 1000 / SLR5500 repeater.NAI for Data is an IP based interface thatenables data applications using the MNIS(MOTOTRBO Network Interface Service)data gateway to transmit and receive datacalls to the radio system directly throughthe repeater.Where an MNIS is required to interface toa given system site then all repeaters* atthat site must have their "NetworkApplication Interface for Data" featureenabled using the CPS. Where an MNISis not required to interface to a givensystem site, then repeaters at that site donot need to have this feature enabled.*Note: Excludes Digital Voting SatelliteReceivers.