CenturyLink, earlier known as CenturyTel, is an integrated communication company that offers Internet access, broadband, and local and long-distance voice services. The company serves consumers and businesses in more than 30 U.S. states. It is formed by a merger between CenturyTel and EMBARQ. CenturyLink manages telephone access lines in Missouri, Wisconsin, Alabama, Arkansas, and Washington. The company also provides local exchange carrier, satellite television, and security monitoring services. It manages the Madison River Communications Corporation. The company offers wholesale and retail fiber transport and high-bandwidth services. Its basic system packages include master control units, integrated digital keypads, and door and window transmitters and sensors. The company offers services under the LightCore and DISH Network brands. CenturyLink additionally provides home security evaluation services.