AT&T Latin America to purchase Nortel Networks optical equipment

April 4, 2001

Apr. 4, 2001--AT&T Latin America has signed a three-year commitment to purchase a range of high-performance Optical Internet infrastructure solutions and services from Nortel Networks for use in the expansion of its high-speed, Pan-Latin American broadband network.

AT&T Latin America (Nasdaq:ATTL) has signed a three-year commitment to purchase a range of high-performance Optical Internet infrastructure solutions and services from Nortel Networks (NYSE:NT)(TSE:NT.) for use in the expansion of its high-speed, Pan-Latin American broadband network.

AT&T Latin America plans to use Nortel Networks OPTera Metro and OPTera Long Haul optical solutions -- featuring open dense wavelength division multiplexing (DWDM) technology -- to build fiber optic networks for delivery of advanced data, voice, Internet and managed services to corporate customers in the countries in which it operates.

Nortel Networks' solution for AT&T Latin America will also include Nortel Networks Preside network management and Nortel Networks Global Professional Services.

About AT&T Latin America:

AT&T Latin America is a U.S.-based, autonomous facilities-based provider of integrated high-bandwidth business communications services and solutions, providing advanced last-mile voice and data connectivity in key business markets. For more information, visit www.attla.com.

About Nortel Networks:

Nortel Networks is a global Internet and communications provider with capabilities spanning Optical, Wireless, Local, Personal Internet and eBusiness. For more information, visit www.nortelnetworks.com.