Glossary
Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business.Incumbent Local-Exchange Carrier (ILEC)
A large telephone company that has been providing local telephone service in the United States since the divestiture of the AT&T telephone monopoly in 1982. All regional Bell operating companies (RBOCs) are considered ILECs.