Critical facility environment - facility integration services include Leibert A/C integration via SiteLink, Lon Distech controllers, Trane RTUs, and delivery of critical alarms for the facility (alarm point monitoring system) to a national central monitoring facility.

• Hardwired interface to NOC for remote alarm annunciation
• Monitoring of DC plant alarms and status, Generator alarms and status, Generator battery charger status, Automatic transfer switch
• Hydrogen detection system
• Integration into fuel oil day tank monitoring system
• CRAC unit integration via Modbus RTU
• Discreet monitoring of fire alarm system, physical security system

U.S. Cellular provides a range of wireless services and products, customer support, and a high-quality network to more than six million customers nationwide. The nation's sixth-largest wireless provider, U.S. Cellular generated $3.9 billion in service revenues in 2009.