The Yealink SIP-T28P represents the next generation VoIP phone which designed for the business user who needs rich telephony features, a friendly UI and superb voice quality. It's equipped with the leading TI TITAN chipset, offers high definition voice quality through the TI voice engine, HD handset, HD speaker and HD codec (G.722). The large high-resolution graphical display together with the 48 keys, The SIP-T28P offers an excellent user experience to configure, make calls, etc. Moreover, to avoid problems with unwanted violations of your audio data, the Yealink SIP-T28P supports the security standards TLS, SRTP, HTTPS, and AES encryption which are necessary to protect against electronic eavesdropping and data theft.