Poly Edge E Expansion Module - Key expansion module for VoIP phone - 22 multifunctional line keys - for Poly Edge E400, E500

Key Features and Benefits: Easy to track call activity on its 5" color LCD screen. More contacts at your fingertips with 22-line keys and 3 pages Turn your Poly Edge series phones into a cost-effective attendant solzution Track even more calls and contacts with the ability to plug up to 2 modules Easy to install with Plug-and-Play setup and powering provided by the Poly Edge E400/E500 series host phone Programmable line keys and a simple, intuitive user experience