It can seperat the signals of Ethernet and CATV and has VOIP and WIFI functions. Name: EOC--wireless slave 1) The equipment has two Eth ports, one tv signal, one VOIP,WIFI2) The equipment can only install VOIP or WIFI, and also simultaneously has both VOIP and WIFI functions.VOIP:Communication ProtocolSIP(RFC3261),SDP(RFC2327),RTP / RTCPVoice CodeG.711A/U,G.723.1,G.729A/G.729ABVoice enhancement ...