Two channel Partyline IP communications interface for extending Partyline audio communications and call signaling to remote sites over IP networks (LAN, WAN, Internet). 3 pin XLR female connectors for Partyline ports. Supports two channels of audio and signaling which can be routed to up to five other LQ units, Can link over IP into Eclipse frames via IVC-32-HX and HelixNet via a HLI-ET2 module . Licensable hosting of up to 8 Agent-IC clients and 8 lines of IP telephony (SIP) per unit. single wall wart PSU included with purchase