Trunking Software for intercom networks with geographical diverse systems; "Trunk Navigator" dynamically allocates either analog or digital (AES3) audio trunk lines between systems using ATM, ISDN, VoIP, digital leased lines or POTS; the software runs on up to 4 individual PCs to achieve redundant operation; the "Trunk Navigator" allows a max of 50 networking Artist systems; for redundant operation 2-4 "Trunk Navigator" licenses are required; a TRL (1080006) per Artist Ring is required.