- Self diagnostic reports via email (testing com mic speaker & switch)- Automatic polling and programming software included- 2 am relay contacts for door/gate or SL-2 strobe light control- Blue Call Connected LED indicator- SIP compatible- PoE powered (class 1 <4 watts)- Automatic noise canceling (ANC) feature for proper operation in noisy environments- VoIP eliminates the need for Push to Talk mode- Network downloadable firmware- Handsfree operation- Marine grade 316 stainless steel prevents corrosi