Yealink’s SIP-Yealink T31 IP phone. Making full use of high quality materials, Equipped with powerful chip, the T3 series owns a stronger computing ability and more upgraded functions, which ensures a higher productivity and smoother office experience. Due to great performance, T3 series is capable to extend more services for different business demands, it offers a smoother user experience, much more visual information at a glance, plus HD Voice characteristics. Dual 10/100Mbps network ports with integrated PoE are ideal for extended network use. The T27G supports two VoIP accounts, simple, flexible and secure installation options, plus support for IPv6.