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7975-A2-GB20-40
December 1998
About the Hotwire 7975
Standalone Termination Unit
1
M/SDSL Overview
Hotwiret Multirate/Symmetrical Digital Subscriber Line (M/SDSL) products
maximize customer service areas by varying the DSL line rate. This ensures
symmetric DSL connectivity over a wide range of telephone line distances and
transmission line qualities.
Hotwire M/SDSL products can transport at full or fractional payload rates over a
2-wire, full-duplex circuit over varying distances based on the conditions of the
2-wire loop. Examples include support for router, multiplexer and PBX
connections at 128 kbps, with distances exceeding 29,000 feet (8.9 km) on
24 gauge (.5 mm) cable, or up to 15,000 feet (4.6 km) delivered at 2.048 Mbps on
24 gauge (.5 mm) cable.
Hotwire M/SDSL is equipped with an automatic configuration capability that
reduces the M/SDSL installation process to a simple plug and play mode. Simply
connecting the units to the line automatically configures the customer for the
maximum data rate supported by the local loop. M/SDSL units can also be
configured at fixed line speeds to achieve maximum distances.