Formed in 1945, Integra Telecom operates as a provider of a variety of telecommunications services. Based in Sacramento, Calif., the firm specializes in providing a range of voice services, such as business lines, ISDN PRI and digital trunks, SIP solutions and conference calling. Formerly known as Scott-Rice Telephone Company, it also provides an array of Internet access services that include email and web hosting and online data storage. In addition, the company offers a suite of private networking services, including MPLS VPN, private line and server colocation.