– Ring with adjustable volume and cadence
– Hearing aid compatible amplified handset with thumbwheel volume control
– Optional RC-4A for secure remote relay control, see DOD 582
– SIP compliant
– PoE powered (class 1, <4 Watts)
– Outbound Proxy, Authentication ID, Peer to Peer, VLAN Tagging
– Network downloadable firmware
– Cycles to up to three rollover phone numbers on busy or no-answer
– Remotely programmable
– Extended temperature range (-40°F to 140°F)
– Selectable auto-answer feature for monitoring
– Diagnostics (for testing remote RC-4A relay)
– K-1900D-IP available in red