The Alcatel-Lucent 1512 SHDSL is a transport plug-in module that extends the reach over copper lines for sites without access to fiber. * 2 Mb/s (E1), X.21, V.35 and 10Base-T Ethernet transport through one and two copper pairs at a speed of N x 64 kb/s * Transmission rate N x 64 kb/s is programmable in all steps (N=3 to 32) * In case of one pair transmission, the second pair can be used for 1+1 line protection * The symmetrical high-speed digital subscriber line (SHDSL) terminals work in rate-adaptive mode: the cable span (allowed cable length) increases as the required bit rate decreases