Metro Ethernet Forum Certifies RCN Business Solutions

Business Wire, Oct 23, 2006

HERNDON, Va. -- RCN Business Solutions, a wholly owned, but separately managed, division of RCN Corporation (NASDAQ: RCNI), announced today that it has been certified to comply with Metro Ethernet Forum (MEF) specifications for Ethernet Private Line (EPL), Ethernet Virtual Private Line (EVPL), and Ethernet LAN (ELAN) services. Iometrix, the MEF authorized certification lab, provided the certification. The MEF is the preeminent industry organization dedicated to accelerating the worldwide adoption of carrier Ethernet networks and services.

"Successfully completing the certification process means that RCN's Ethernet services conform to the industry standard definition of Carrier Ethernet services ratified by the MEF," said RCN Business Solutions President Felipe Alvarez. "As a member, we actively support the MEF and are pleased to have achieved this independent third-party validation of our high-quality Ethernet service."

The MEF certification program involved a series of lab tests and remote monitoring tests on RCN's network and network equipment. RCN's test results passed the standards established by the MEF 9 test suite specification. RCN Business Solutions will be participating with the MEF at Light Reading's Ethernet Expo at the Hilton New York on Oct. 23rd through 25th to demonstrate some of the certification test results.

"The MEF consists of more than 90 carriers, equipment vendors and end-users who are driving the definition of and applications for a truly carrier-class Ethernet," said Nan Chen, President of the MEF, "By successfully passing this certification testing, RCN provides current and potential carrier and enterprise clients with assurance that RCN has built and manages Ethernet services fully compliant to MEF 9 technical specifications."

About RCN Business Solutions

RCN Business Solutions is a leading supplier of high-capacity transport, internet, bulk video, and voice services and is the smart telecommunications alternative for large and medium-sized businesses. Maintaining a network independent of incumbent providers in Boston, New York, Eastern PA, Chicago, and Washington, DC, RCN Business Solutions deploys custom solutions to companies in the finance, hospitality, media, government, health care and education industries.

About RCN Corporation

RCN Corporation, http://www.rcn.com, is one of the largest facilities-based competitive providers of bundled cable, high-speed internet and phone services delivered over its own fiber-optic local network to residential customers in the most densely populated markets in the U.S. RCN provides service in the Boston, New York, Eastern Pennsylvania, Washington, D.C., Chicago, San Francisco and Los Angeles metropolitan markets. (RCNI-G)