The HelixNet Partyline Intercom System from Clear-Com is the industry’s first digitally networked partyline intercom. It is a high-channel density system with a high user capacity. Four intercom channels, including program audio, and power for beltpacks are transmitted over a single shielded twisted-pair cable, such as microphone cable, CAT5, or CAT6. The system is immune to electro-magnetic interference and ground loops. Contoured audio frequency response delivers sound that is highly intelligible. Each main station supports up to 20 beltpacks, and each beltpack can access two of the four intercom channels. The beltpacks are encased in rugged cast aluminum. Optional interface modules are available for connectivity to virtually all two-wire and four-wire systems.