- Self diagnostic reports via email (testing com, mic, speaker & switch)- Automatic polling and programming software included- 2 Amp relay contacts for door/gate or SL-2 strobe light control- Blue Call Connected LED indicator (E-30/E-32-IP only)- SIP compliant (see pg 2 for list of compatible IP-PBX phone systems)- 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-