ITC T-6702A Desktop Paging Microphone with 7 inch Touch Screen، number keys & function key interface, Support one key call single zone & whole zones, Embed PC technology, Built-in DSP Audio processing technology design, Built-in single network hardware audio decoding module, support TCP/IP, UDP, IGMP (Multicast) protocol, transmit 16-bit stereo audio signal of CD quality through network transmission, Support two-way intercom function, Support multiple call strategy, Built-in 2W all frequency Hi-Fi speaker, dia. 3.5 headphone socket and a dia. 3.5 MIC input socket, 4Ω, 2W.