Yealink | UC&C terminal, video collaboration, conference phone, IP phone
Audio Features > HD voice: HD handset, HD speaker > Codecs: G.722, G.711(A/μ), G.723, G.729AB, G.726, iLBC > DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO > Full-duplex hands-free speakerphone with AEC > VAD, CNG, AEC, PLC, AJB, AGC...