BT Group plc
BT is one of Europe's leading providers of telecommunications services.  Its principal activities include local, national and international telecommunications services, higher-value broadband and internet products and services, and IT solutions.  In the UK, BT serves over 21 million corporate and residential customers with more than 28 million exchange lines, as well as providing network services to other licensed operators. BT's group strategy is to create value for shareholders through being the best provider of communications services and solutions for everybody in the UK, and for corporate customers in Europe, achieving global reach through partnership. BT consists principally of four lines of business: BT Retail, BT Wholesale, BT Global Services and BT Openworld.

British Telecommunications plc (BT)
BT is the global services provider that helps multi-site organisations master the complexity of business communication.  Because of our expertise, partnerships and experience, a completeness of a range of services linked to a global BusinessIP network and a culturally attuned human network of professionals, we can deliver for you the promise of integrated communications and IT in a connected world.

Level 3 Communications, Inc.
Level 3 Communications, Inc. and its subsidiaries engage in the communications, information services and coal mining businesses through ownership of operating subsidiaries and substantial equity positions in public companies. The Company is a facilities-based provider (a provider that owns or leases a substantial portion of the plant, property and equipment necessary to provide its services) of a broad range of integrated communications services. Level 3 has created, generally by constructing its own assets, but also through a combination of purchasing and leasing of facilities, the Level 3 Network, an advanced, international, facilities-based communications network. The Company has designed the Level 3 Network to provide communications services that employ and leverage rapidly improving underlying optical and Internet Protocol technologies.

XO Communications, Inc.
XO Communications is a full-service provider of communications services for small & growing businesses, larger enterprises and carriers. XO™ possesses a wealth of local fiber, DSL, fixed wireless, data networking, Internet and long-haul network assets that few - if any - U.S. emerging service providers can match. In fact, XO is positioned as one of the only national, local end-to-end broadband communications company in U.S. That means we're about breadth, depth and execution on a national scale in the best local markets.

SBC Communications Inc
SBC Communications Inc. provides communications services and products in the United States through its subsidiaries. The services and products that the Company offers vary by market and include local exchange services, wireless communications, long-distance services, Internet services, telecommunications equipment and directory advertising and publishing. Its services and products have been marketed under several brands including SBC Ameritech, SBC Nevada Bell, SBC Pacific Bell, SBC SNET, SBC Southwestern Bell, and, through its joint venture with BellSouth Corporation, Cingular Wireless. SBC operates four business segments: wireline, wireless, directory and international.