SHDSL interfaces on J-series Service Routers support a symmetric, high-speed digital subscriber line (SHDSL) multirate technology for data transfer between a single customer premises equipment (CPE) subscriber and a central office (CO). ITU-T G.991.2 is the officially designated standard describing SHDSL, also known as G.SHDSL.
Unlike ADSL, which delivers more bandwidth downstream than available upstream, SHDSL is symmetrical and delivers a bandwidth of up to 2.3 Mbps in both directions. Because business applications require higher-speed digital transportation methods, SHDSL is becoming very popular and gaining wide acceptance in the industry. Additionally, SHDSL is compatible with ADSL and therefore causes very little, if any, interference between cables.
SHDSL is deployed on a network in much the same manner as ADSL.