G.SHDSL is an international standard for symmetric DSL
developed by the ITU
. G.SHDSL (also known as G.991.2) is used for sending and receiving high-speed symmetrical data streams over a pair of copper
wires at rates between 192 kbps
and 2.31 Mbps. G.SHDSL was developed to incorporate the features of other DSL
technologies, such as ADSL
. It can also transport T1
signals. This is the first DSL technology to be developed from the ground up as an international standard.
G.SHDSL was ratified by the ITU in February 2001.