• Optimal HD audio • Yealink Noise Proof Technology • Smart Noise Filtering • 20-foot (6-meter) microphone pickup range • Apply to small to medium conference room • Built-in 6-microphone array, 360-degree voice pickup • Built-in 1-microphone array, decrease noise • Loudspeaker - Frequency: 100-20,000 Hz - Volume: 94dB at 0.5-m peak volume • 56mm diameter and 5w speaker • Full-duplex speakerphone with AEC • Echo cancellation tail length is up to 320ms • Background noise suppression • Codecs: G722, G722.1C, G726, G.729, G.729A, G723, iLBC, Opus, PCMU (G.711A), PCMA (G.711μ) • DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO • VAD, CNG, PLC, AJB, AGC |