The Yealink SIP-T20 is an entry-level 2 line VoIP HD phone. It is equipped with the leading TI TITAN chipset, 2x15 characters LCD, a broad range of voice codecs (including high-definition - G.722), HD handset, and HD speaker. It can be ordered with AC, PoE, or both power options.
IP PBX System Integration
Codecs and Voice Features