The ASMi-52 SHDSL modem and multiplexer transmits combined data streams (E1, Ethernet or serial) over an SHDSL link at various data rates. The ASMi-52 SHDSL modem incorporates TC-PAM technology, extending the transmission range and enabling carriers to reach more users at higher data rates over larger distances in the Last Mile. This unit also answers the need for high speed data transmission among enterprise users. Typical applications include, municipalities, utilities, corporate connectivity, and cellular backhaul. The attractively priced ASMi-52L SHDSL model is offered for modem applications that require only a single user port.