MCI Receives Internet Telephony® Magazine’s Product of the Year Award for 2005

MCI’s Next-Generation Suite of VoIP Services Honored for Outstanding Innovation

ASHBURN, VA, December 27, 2005 - MCI, Inc. (NASDAQ: MCIP) announced today that Technology Marketing Corporation (TMC®)’s INTERNET TELEPHONY® magazine (www.itmag.com) has named MCI’s next-generation suite of Voice over IP (VoIP) Services as a recipient of a 2005 Product of the Year Award. MCI’s VoIP offerings include Hosted IP Centrex, IP Integrated Access, Managed IP PBX and IP Trunking Services.

“Leveraging the strength of our global IP network, we continue to deliver innovative services through our flagship MCI portfolio of VoIP solutions,” said Nancy Gofus, senior vice president of IP Services for MCI. “With our recently extended portfolio, companies can now choose the VoIP solution that best matches their business and technical needs, while taking advantage of their existing voice and data infrastructure.”

In 2005, MCI launched two new additions to its VoIP portfolio, including Managed IP PBX and IP Trunking Services. With MCI’s new Managed IP PBX Service, businesses can offload the management of planning, designing and implementing their premise-based IP telephony systems. In addition, the new MCI IP Trunking Service enables customers to carry local, long distance and data traffic on a single converged network, while eliminating the need to purchase costly IP to PSTN gateways to terminate and convert VoIP calls within the network. With MCI’s comprehensive portfolio, customers can select from solutions hosted within MCI’s network, located at the customer’s premise or a hybrid of the two, giving customers far greater flexibility.

“Each year INTERNET TELEPHONY magazine bestows its Product of the Year awards on companies that have demonstrated excellence in technological advancement and application refinements. MCI has demonstrated to the editors of INTERNET TELEPHONY that its services are committed to quality and innovation while addressing the real needs in the marketplace,” said Rich Tehrani, Group Publisher and Editor-in-Chief of INTERNET TELEPHONY.

The Product of the Year Award winners for 2005 will be highlighted in the January and February 2006 issues of INTERNET TELEPHONY magazine.

About MCI
MCI, Inc. (NASDAQ: MCIP) is a leading global communications provider, delivering innovative, cost-effective, advanced communications connectivity to businesses, governments and consumers. With one of the most expansive global IP backbones and wholly-owned data networks, MCI develops the converged communications products and services that are the foundation for commerce and communications in today’s market. For more information, go to www.mci.com.

About TMC®
Celebrating more than 30 years as a leading publisher, Technology Marketing Corporation (TMC®) publishes Customer Inter@ction Solutions® and INTERNET TELEPHONY® magazines, Web portal TMCnet.com, and the online publications SIP™, Speech-World™, VoIP Developer™, WiFI Telephony™, WiMAX™, Alternative Power™ and BiometriTech™. TMC® is also the first publisher to test new products in its own on-site laboratories, TMC® Labs. TMC® produces INTERNET TELEPHONY® Conference & EXPO, VoIP Developer Conference and Global Call Center Outsourcing Summit . TMC offers live and online certification programs through TMC University. TMCnet.com publishes more than 14 online newsletters. Visit www.tmcnet.com for details.

Contact Information

Janet Brumfield

MCI Public Relations

MCI, Inc.

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