Introduction
The Nokia 1662 SMC is a compact, cost‑effective SDH‑based Multi‑Service Provisioning Platform (MSPP) in the Optical Multi‑Service Node (OMSN) family, designed for metro edge, aggregation, and regional transport networks. It delivers integrated TDM, Ethernet, and MPLS services in a space‑saving form factor, optimized for STM‑1/4/16 applications.