Ranked number 12 on the Fortune 500 list, AT&T virtually invented the telephone and is one of the world’s largest companies.  AT&T provides a wide portfolio of business services, including maintenance, support and managed services.

As the voice system maintenance provider for AT&T’s customers, Continuant handles systems manufactured by virtually every OEM, including Avaya, Nortel, Siemens and many others.  End users have included state governments, a Fortune 100 insurance company and one of the largest energy companies in the United States.