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ProCare 1 Year 7x24x4 Remote Maintenance for the UC 420 or UC 420e providing: 30 minute response time into technical support access to software upgrades and patches and four hour hardware replacement available 24 hours a day 7 days a week.

- Seamless voice and data integration over VoIP-based network architectures- Designed for Ethernet and Multi-T1 applications- Optional eSBC functionality- Up to 8 analog POTS interfaces- Optional outbound lifeline via FXO- Compatible with industry-leading softswitches and call agents- Dynamic bandwidth allocation affords more efficient utilization- Integral full-featured business-class IP router- Stateful inspection firewall for network security- Quality of Service (QoS) for delay and jitter sensitive traffic like VoIP- Supports 802.1q Virtual LAN (VLAN) Trunking- Voice Quality Monitoring (VQM)- Network Address Translation (NAT) for IP address concealment- Feature-rich ADTRAN Operating System (AOS)- Rugged metal case- Optional battery backup- Industry-leading five-year warranty

- DuraShell� Plus fabric shell- Shadowguard carbon-enhanced interior- 10 windows with shoot-through mesh- 3-person capacity- 75" hub-to-hub 66" center height- 59" x 59" footprint

- Valcom 4.0" digital clock- 24V- Bar display digital clock- 4 Digit display- Reliable economical option working with the Valcom Digital Communication 2-wire system- Exclusive high efficiency super-bright LED display- Immediate corrections for time change- Unique specially molded anti-glare front filter gives a smooth surface with no visible external screws allowing for perfect reading