Alcatel-Lucent 1646 Synchronous Multiplexer and Alcatel-Lucent 1646 Synchronous Multiplexer Compact RELEASE 2The Alcatel-Lucent 1646 Synchronous Multiplexer (SM) and Alcatel-Lucent 1646 Synchronous Multiplexer Compact (SMC), part of the Alcatel-Lucent Optical Multi-Service Node (OMSN) family, are ideal Synchronous Digital Hierarchy (SDH) customer premises equipment (CPE) for the delivery of TDM and Ethernet services. They provide high capacity, high port density and very low power consumption while supporting high-speed Syn-chronous Transport Mode 16 (STM-16) rings, Fast Ethernet/Gigabit Ethernet (FE/GE) and Plesiochronous Digital Hierarchy (PDH) interfaces. The Alcatel-Lucent 1646 SM and Alcatel-Lucent 1646 SMC provide a rapid return on investment for fixed or wireless service providers and enterprises in virtually any network application