K-1900W-IP-RED - 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,

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