Nortel M7310 Display Phone NT8B20 (Black, Refurbished)Nortel M7310 Display Phone NT8B20 The Nortel M7310 (NT8B20) is a feature rich digital business phone designed for Norstar and Meridian communication systems. With a two line LCD display, programmable feature keys, and speakerphone capability, it is ideal for office professionals who require efficient call handling. Built for reliability and ease of use, the M7310 provides quick access to extensions, call features, and system functions, making it one