Introduction
The Huawei OptiXtrans E6616 is a 5U-height, compact, high-density MS-OTN (Multi-Service Optical Transport Network) platform in the OptiXtrans E6600 series. Designed for metro aggregation, enterprise core, industry private networks, and data center interconnection (DCI), it integrates PCM, PDH, SDH, packet, and OTN into a single 5‑in‑1 converged architecture, delivering ultra‑large capacity, multi‑service flexibility, and intelligent O&M.