Yealink YEA-CP860 Voice Conferencing Device Additional Features: 1xRJ45 10/100M Ethernet port Power over Ethernet (IEEE 802.3af ), class 0 2xEX mic port 1xUSB2.0 port 1xmobile phone/PC port: 3.5mm 1xSecurity lock port Optima HD voice, full duplex technology 10-feet and 360 degree voice pickup Optional expansion microphones for wider reception 320ms echo cancellation tail length Connect to a mobile phone or PC for conference calls 5-way conferencing support USB call recording support Audio features Optima HD voice 10-feet (3-meter)microphone pickup, can be applied to medium-sized conference room Built in 3-microphone array, 360 degree voice pickup 112 mm diameter and 2.7w speaker Full-duplex speakerphone with AEC Echo cancellation tail length is up to 320ms Background noise suppression Codecs: G.722, G.711(A/µ),G.729AB, iLBC DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO VAD, CNG,PLC, A...