’s Park Air Systems is supplying the first of its new generation IP-enabled multimode digital radios (MDR) to ARINC. A significant number of production units will be delivered to the data service provider’s Annapolis, MD headquarters for installation within its global network. ARINC provides communications, engineering and integration solutions for commercial, defense and government customers worldwide. Named the PAE 6525 MDR, the software-defined radio delivers data and voice services in the VHF air band; waveforms included in the 6525 MDR are aircraft communications addressing and reporting system (ACARS), VHF digital link (VDL) Mode 2 and AM voice. The implementation of the TCP/IP interface allows the 6525 MDR to deliver reliable data-link services whilst realizing the cost and performance benefit of modern telecommunication networks. Park Air Systems commenced its VDL development program in the early 1990s as the International Civil Aviation Organisation (ICAO) standards were evolving and has contributed to the evolution of the specifications in both the USA and European forums.