Established in 1952, Mid-Rivers is one of the leading providers of voice services to its subscribers with over 25,000 working access lines across Montana. Located in Lewistown, Mont., the company offers provides one-party service with features such as caller identity, repeat dialing and call return. Its advanced calling features are voice mail, call forwarding, call waiting, speed dial and telemarketing screening. The company operates a high-speed Internet Protocol (IP) distance learning interactive television (ITV) system. It centralizes the connectivity for schools and other learning institutions.