Newsletter
The Black Box website uses cookies.
By continuing the use of the Black Box website, or by pressing the agree button on the right, you consent to the use of cookies on this website. More information.
Home > Resources > Technical Resources > Black Box Explains > WAN > Various DSL standards.
Navigation
 
Various DSL standards.

HDSL — High-bit-rate DSL; uses two pairs of copper wires; E1/T1 data rates; distances up to 3657 metres over 24 AWG copper.

SDSL — Symmetric DSL; uses a single pair of copper wires; multiple data rates of up to 2.3 Mbps; distances up to 3657 metres over 24 AWG copper.

G.SHDSL — G.991.2 (ITU) Symmetric High-bit-rate DSL; uses a single pair of copper wires; data rates up to 2.3 Mbps; distances up to 4267 metres over 24 AWG copper.

M/SDSL — Multirate SDSL; uses one pair of copper wires; changing data rates of 2 Mbps; distances over 24 AWG copper up to 8839 metres at 64 or 128 kbps or 4572 metres at full 2 Mbps.

HDSL2 — High-bit-rate DSL2; uses one copper wire pair; E1/T1 data rates.

RADSL — Rate Adaptive DSL; symmetric or asymmetric; uses one pair of copper wires; data rates from 1–7 Mbps downstream (to the user) and 128 kbps–1 Mbps; distances up to 5486 metres over 24 AWG copper.

G.Lite — G.991.2 (ITU) standard based on ADSL; uses one pair of copper wires; data rates of 1.5 Mbps downstream, 512 kbps upstream; supports fast retrain; no need for splitter.

IDSL — ISDN DSL; uses one pair of copper wires; data rates up to 144 kbps; distances up to 7924 metres over 24 AWG copper.

ADSL — Asymmetric DSL; uses one pair of copper wires; data rates of 1.5– 8 Mbps downstream and 64–640 kbps upstream; distances over 24 AWG copper up to 5486 metres at 1.5 Mbps and 1828 metres at 7 Mbps.

VDSL — Very high-speed DSL; uses a single copper wire loop; data rates up to 52 Mbps downstream and 26 Mbps upstream; limited distance (around 3280 metres).

ReachDSL™ — Symmetric/asymmetric; uses one pair of copper wires; data rates up to 1 Mbps; distances up to approximately 9144 metres over 24 AWG copper. (Nonstandard.)

Share |