| Automatic   polling and programming software included |   
     | 2 Amp relay contacts for   door/gate or SL-2 strobe light control |   
     | SIP compliant |   
     | Outbound Proxy, Authentication   ID, Peer to Peer, VLAN Tagging |   
     | PoE powered (class 1, <4   Watts) |   
     | Automatic Noise Canceling   (ANC) for clear audio, even in noisy environments |   
     | Meets ADA requirements for   Emergency Phones: |   
     | Automatically lights the “Call   Connected” LED |   
     | Transmits a unique location   I.D. code or voice announcement |   
     | Grade 2 Braille label for the   visually impaired |   
     | Non-volatile digital voice   announcer with 28 seconds of voice memory |   
     | Handsfree operation |   
     | Dials up to 5 emergency   numbers |   
     | Cycles through backup phone   numbers on busy or no-answer |   
     | Hangs up on busy signal,   time-out or touch tone command |   
     | Extended temperature range of   -40°F to 140°F |   
     | VoIP eliminates the need for   “Push to Talk” mode |   
     | Network downloadable firmware |   
     | Diagnostics for testing   microphone, speaker, and relay |   
     | Enhanced Weather Protection   (EWP), EWP products are designed to meet IP66 Ingress Protection Rating, see   DOD 859 |