Yealink SIP-T21P Entry Level IP Phone Yealink SIP-T21P Entry Level IP Phone is a 2-line IP phone that can perform the basic functions you need for extended phone use. It has a phone directory, a 5-line graphical LCD screen, HD-Voice, and supports PoE. with T21P phones time used to move from one office to convey messages is eliminated since one is only required to call. Specs Has 2 Line Appearances Yealink Optima HD Voice Supported 2 SIP user accounts Full-duplex speakerphone modules supported 132×64-pixel graphical LCD display RJ9 Headset Port Wall mountable
