The U.S. Senate at Sergeant at Arms awarded CenturyLink, Inc. [CTL] an $11.4 million three-year contract to provide Senate state offices with a unified communications-as-a-service platform for hosted voice-over-internet-protocol (VoIP) service, the company said Monday.

This contract includes the installation, maintenance, operation, and management of company-supplied hardware, software, training, and help desk support to provide VoIP service to over 450 Senate offices in every state.

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The U.S. Senate Sergeant at Arms is responsible for all Senate telecommunications and technology support services for Senate offices both in Washington, DC and the states.

The contract is worth about $3.8 million per year and includes four one-year options with a maximum potential value of $26 million.

“CenturyLink looks forward to providing U.S. Senate state offices with a modern, secure unified communications system that offers senators and their staff members more features and functionality,” Erich Sanchack, CenturyLink senior vice president and general manager of federal solutions, said in a statement.