global standard for single pair high speed digital subscriber line (G.SHDSL)

Global Standard for Single-Pair Highspeed Digital Subscriber Line G.SHDSL is a combined DSL method with identical transmission rates in the downstream and upstream. G.SHDSL combines SDSL and HDSL2. G.HSDSL is a symmetrically operating method for copper twisted pairs that is used in wide- area networks, but also for LAN-LAN links and for connecting servers to local networks.

G.SHDSL can transmit data over longer distances. Data rates depend on the number of bundled subscriber lines(ULLs). If two subscriber lines are bundled, the data rates are 4 Mbit/s, and 6 Mbit/s for three. The data rates are always a multiple of the basic data rate of 64 kbit/s or 192 kbit/s. The bundling of 4 subscriber lines is specified in the SHDSL.bis standard.

G,SHDSL combines the features of other DSL methods and can transmit a wide variety of protocols, including ISDN, TransmissionSystem 1( T1) and T3, ATM and the IP protocol. One advantage of this technology is that transmission continues even if a subscriber line fails.