also known as g.991.2, g.shdsl is an international standard for symmetric dsl developed by the itu. g.shdsl provides for sending and receiving high-speed symmetrical data streams over a single pair of copper wires at rate......also known as g.991.2, g.shdsl is an international standard for symmetric dsl developed by the itu. g.shdsl provides for sending and receiving high-speed symmetrical data streams over a single pair of copper wires at rates up to 2.31 mbps. our g.shdsl modem can be used in repeater mode to achieve hundreds of kilometers... main features: industrial grade g.shdsl modem up to 2.31 mbps speed up to 24 km between nodes 2 modems g.shdsl in one box !!! repeater function= permits repetition till dozens of km ! 2 ethernet ports (with embedded switch) din rail mounting works on 2 single pairs working temperature: -40c..+65c