ADTRAN supplies innovative network access products that enable today's widespread digital telecommunications applications, including Internet access, telecommuting, corporate connectivity, distance learning, video-conferencing, and teleradiology. Used extensively in the networks of incumbent local exchange carriers (U.S. Regional Bell Operating Companies), independent domestic telcos (GTE), competitive local exchange carriers (CLEC), interexchange carriers, Internet service providers, and private and public enterprises worldwide, ADTRAN products consistently reduce operating costs and improve network performance. ADTRAN also provides custom-designed products for many well-known Original Equipment Manufacturers.The TRACER 2631 provides T1 transport and Ethernet routing capability by way of a spread spectrum microwave link for distances of 48 km or more depending on path engineering. System performance is partially determined by the engineering of the microwave link. Each of the TRACER 2631 link is composed of two units - the baseband processor (BBP) and the radio frequency (RF) converter. A DS1/DSX-1 (T1) interface and a 10BaseT Ethernet interface are provided on the rear of the BBP, which can be mounted in a 19-inch rack. The DS1/DSX-1 interface provides connections up to 1830 m from T1 equipment, and the Ethernet interface is fully compliant with the IEEE 802.3 standard. A single coaxial cable connects the BBP to the RF converter and another coaxial cable connects the RF converter to the antenna.