Poly Edge E550 IP Phone and PoE-enabled, Part# 82M91AA 28 button telephone It includes Tip and Ring

It includes Tip and Ring terminals for connection to a loop start trunk to provide paging access and enough audio capacity to drive up to 25 self-amplified speaker inputs

Compatible with Mitel 8528

Three line adjustable display with Contrast control 80-name and number Callers List

Split an hdmi audio/video source to two separate hdmi displays

Poly Edge E550 IP Phone and PoE-enabled, Part# 82M91AA 28 button telephone It includes Tip and RingThe efficient Poly Edge E550 82M91AA IP Phone and PoE enabled is a desk phone that makes work easy. Two displays and 12 line keys offer more ways to connect, plus quality audio, in a seriously sharp package. FEATURES: All the features you could ask for: Get fast access to features via a large 5 color display. Stay informed with the surround light status indicator with RGB mixing. And handle multiple calls with ease using 12 line keys supporting up to