Sentinel is a suite of products, which are used to create an All-IP solution for tactical area voice and data communications. It can be used to create a complete Wide Area System (WAS), with as many Local Area Networks (LANs) as needed to meet a user's requirement for a modern tactical communications network. Additionally, Sentinel products can be deployed as an "add on" Local Area System (LAS) to an existing military network as a low-cost enhancement.