51i, Single Line SIP Phone English Text Keypad (6751i) * Equipped with XML browser capabilities allowing access to customized services and applications * Extensive storage capacity for personal directory, callers log, and redial list * Shared call and bridged line appearances, call forward, call transfer and call waiting increase call flexibility and control * Full-duplex speakerphone with excellent voice clarity and delivery * Dual auto-sensing switched Ethernet ports eliminate additional wiring and simplify installations * Easily created configuration files, using any text editor, can be used to configure phones individually or centrally