HLI-2W2 (Last Time Buy) 11/6/2017 Category: Products, HelixNet Digital Network Partyline System, Legacy HelixNet Interface 2-wire interface for HMS-4X(2) Auto nulling Level and VOX control Clear-Com / RTS-TW Compatible Call and RMK signaling The HelixNet System Wired Partyline - Networked Flexible cabling Up to 24 Channels – Licensed Program Audio user lever control Effortless Management Fast front panel control and configuration Easy to use CCM browser configuration Plug-and-go with auto discovery Central upgrades from main station