0383421 Huawei OptiX OSN Telecom System Card

The Huawei 0383421 (SSN1UXCSB01) is a universal cross-connect and switching board designed for Huawei OptiX SDH/MSTP transmission platforms. This system board provides high-capacity cross-connect switching functionality, enabling flexible traffic routing and protection switching within optical transport networks.

The UXCSB01 board is deployed in Huawei OptiX series equipment such as the OSN 3500, OSN 7500, and similar SDH/MSTP platforms. It serves as a core switching element, handling the cross-connection of STM-level signals and supporting various network protection schemes including MSP and SNCP.

This is a legacy product associated with Huawei’s established SDH/MSTP transmission portfolio. While these platforms remain in active service across many telecommunications networks, they represent mature technology that has been supplemented by newer OTN and packet-optical solutions. The board remains relevant for network maintenance, capacity expansion, and spares inventory.

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