HLI-ET2 on September 29, 2015 | Marketing Team HelixNet Main Stations accept linking as well as two-wire and four-wire optional interface modules, offering seamless connectivity to LAN and virtually all common two-wire and four-wire audio systems. The HLI-ET2 Ethernet Linking Module provides a dual LAN interface to connect to other HelixNet Main Stations. Up to three stations can be connected over a LAN. Once connected, stations share partyline channels and program audio, and make them available to any station and beltpack on the linked system. All labels are transferred across the network automatically.Use our Digital Partyline Calculator to calculate the maximum acceptable cable length for a Clear-Com Digital Partyline System.