American Fiber Systems and Global Crossing Sign Licensing Agreement for Optical Ethernet Internet Access.

Business Editors/High-Tech Writers

ROCHESTER, N.Y.--(BUSINESS WIRE)--April 13, 2004

AFS to Deliver Carrier Class Ethernet Internet Access 

with Global Crossing in Five Metropolitan Areas

American Fiber Systems (AFS), a leading nationwide provider of metropolitan optical solutions and Global Crossing (NASDAQ: GLBC) announced today that AFS has selected Global Crossing as one of its suppliers for Ethernet Internet Access service to customers in Cleveland, Kansas City, Minneapolis-St. Paul, Nashville and Salt Lake City. AFS will offer Global Crossing's IP Transit Service, which provides Internet Protocol connection at designated speeds into Global Crossing's worldwide Internet backbone at Global Crossing Points of Presence in each city.

"Our industry-leading IP Transit Service allows American Fiber Systems to better serve its enterprise and service provider customers as they can now offer highly competitive rates for secure, high-quality Internet connectivity services," said Ted Higase, Global Crossing's Executive Vice President, Carrier Sales. "We are pleased to be working closely with AFS and are confident our IP Transit Service will give them additional competitive advantages."

AFS' Ethernet Internet Access service (EIA) provides Ethernet based connections to the Internet backbone with bandwidth rates starting at 10 Mbps up to GIG-E, with the customer able to choose their specific, custom bandwidth rate. AFS EIA service is being implemented with multiple Tier One Internet backbone suppliers utilizing a network design that delivers a load balanced, reliable Internet access service.

"We selected Global Crossing because of the high bandwidth and extensive reach of the company's global IP network, which delivers service to 500 cities in 50 countries," said Bill Ciminelli, American Fiber Systems Vice President, Network Development and Services. "AFS' Metropolitan Area Networks deliver strategic value through their fault-tolerant network design and plentiful supply of optical connectivity. They underpin the strong economic benefits inherent in unlimited bandwidth at a reasonable, fixed price and our customers now gain the scale and scope of Global Crossing's global fiber optic network. We will co-implement and co-manage the networks with Global Crossing in our local markets, and AFS customers will continue to have a single provider, a single network and a single point of contact," continued Ciminelli.

About American Fiber Systems

American Fiber Systems, a provider of metropolitan fiber optic network infrastructure and wholesale transport services, is dedicated to enabling wireline, wireless carriers and large enterprises in achieving a competitive advantage from optical broadband communications technology. AFS has deployed over 76,000 miles of high-capacity, high-bandwidth metropolitan fiber optic cable since 2000 in several cities, including Cleveland, OH; Kansas City KS/MO; Minneapolis/St. Paul, MN, Nashville, TN and Salt Lake City, UT. They connect to a city's most important points of communications presence, including ILEC central offices and wire centers; CLEC PoPs; Internet Service Provider (ISP) and data center locations; Inter-exchange "carrier hotels;" wireless providers and cable company head ends; and Fortune 1000 companies. AFS has over 400 capacity enabled on-net buildings. The AFS web site may be found www.americanfibersystems.com

About Global Crossing

Global Crossing (NASDAQ: GLBC) provides telecommunications solutions over the world's first integrated global IP-based network. Its core network connects more than 300 cities and 30 countries worldwide, and delivers services to more than 500 major cities, 50 countries and 6 continents around the globe. The company's global sales and support model matches the network footprint and, like the network, delivers a consistent customer experience worldwide.

Global Crossing IP services are global in scale, linking the world's enterprises, governments and carriers with customers, employees and partners worldwide in a secure environment that is ideally suited for IP-based business applications, allowing e-commerce to thrive. The company offers a full range of managed data and voice products including Global Crossing IP VPN Service, Global Crossing Managed Services and Global Crossing VoIP services, to more than 40 percent of the Fortune 500, as well as 700 carriers, mobile operators and ISPs.

Please visit www.globalcrossing.com for more information about Global Crossing.

Statements made in this press release that state Global Crossing's intentions, beliefs, expectations, or predictions for the future are forward-looking statements. These statements contain words such as "anticipate," "estimate," "expect," "project," "intend," "plan," "believe," "will," or similar expressions. Such statements are subject to known and unknown risks, uncertainties and other factors that could cause the actual results to differ materially from those contemplated by the statements, including risks referenced from time to time in the company's filings with the Securities and Exchange Commission. The company undertakes no duty to update information contained in this press release or in other public disclosures at any time.