Yealink SIP-T28P is an executive IP phone designed for power users in office environment. It is especially designed for maximum productivity and efficiency in every-day business environment. Using TI chipset and Voice Engine SIP-T28P offers unrivalled superb HD Voice Quality, innovative functional richness, friendly user interface, stylish and elegant design. It is definitely able to provide a pleasant and satisfactory end-user experience. 6 Lines - It supports up to 6 SIP accounts, each with a standalone configuration. HD Voice Quality - It supports advanced wideband voice codec G.722 and full-duplex hands-free peakerphone with enhanced AEC, delivering superior voice clarity. Executive Level Phone - Equiped with 16 programmable function keys with LED, 4 soft keys, and supported BLF, XML Phonebook features, which increase working efficiency.