Symmetric DSL (SDSL) Also called single-line HDSL, SDSL provides symmetric data
transmission rates over a single wire pair to support maximum transmission rates ranging
from 384 to 768 kbps. Maximum local loop distances range from 12,000 to 18,000 feet.
Telephone service is not supported.
Universal DSL (UDSL) UDSL is a proposed standard for the European community that
will deliver symmetrical DSL service at 2 Mbps.
Very-High-Data-Rate DSL (VDSL) VDSL is an asymmetric DSL service that is expected
to provide downstream data transmission rates ranging from 13 to 52 Mbps and upstream
rates ranging from 1.5 Mbps to ...
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