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MCI was instrumental in legal and regulatory changes that led to the breakup of the Bell System and introduced competition in the U.S. telephone industry. [1] Its MCI Mail, launched in 1983, was one of the first Email services and its MCI.net was an integral part of the Internet backbone. The company was acquired by WorldCom in 1998.
MCI moved aggressively to insert itself into the market by launching 1-800-COLLECT that year. By dialing 1-800-COLLECT, customers could connect with an automated MCI system which would directly place a call to a designated receiving party for a fraction of the cost of the AT&T service for its operator-assisted collect calling.
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Automatic number announcement systems are based on automatic number identification. They are intended for use by phone company technicians, the ANAC system bypasses customer features, such as unlisted numbers, caller ID blocking, and outgoing call blocking. Installers of multi-line business services where outgoing calls from all lines display ...
MCI, Inc. (formerly WorldCom and MCI WorldCom) was a telecommunications company. For a time, it was the second-largest long-distance telephone company in the United States , after AT&T .
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A typical relay service conversation. A telecommunications relay service, also known as TRS, relay service, or IP-relay, or Web-based relay service, is an operator service that allows people who are deaf, hard of hearing, deafblind, or have a speech disorder to place calls to standard telephone users via a keyboard or assistive device.