Keith R. Henderson

Excel Telecom (dba Excel Telecommunications) is a leading, facilities based provider of a rich suite of high quality, integrated voice and data communications products and services to residential, commercial and carrier customers. Excel offers a wide range of switched and dedicated voice and data services, including domestic and international direct-dial and dial-around long distance, toll-free, wholesale pre-paid long distance and local services, as well as carrier transport, conferencing, hosting and other value-added services, to commercial, carrier and residential customers. Based on its Veraz softswitching platform, Excel has developed and deployed its next generation, IP-based voice and data services, including SIP trunking, hosted IP PBX, IP VPNs and dedicated data services. The Company owns and operates a robust, nationwide Class IV/V VoIP-FGD enabled network that forms a mesh of connectivity across 9 major U.S. metropolitan markets. Consisting of long haul fiber paths, numerous routers, servers and switching equipment, the network provides on-net coverage of virtually every U.S. LATA. Excel also maintains interconnect agreements with more than 300 carriers.

Part of AT&T, Inc., Southwestern Bell Telephone Co. provides telecommunication services. The company is based in San Antonio, TX.

VarTec Telecom, Inc. provides local and long-distance telecommunications services to business and residential customers in the US, Canada and Europe. It has its own switching and network infrastructure in the U.S. and Europe. The company was founded by A. Joe Mitchell Jr. in February, 1989 and is located in Carrollton, TX.