Huawei TNN1SCA 03020XQR System Control Communication and Auxiliary Processing Unit

The Huawei TNN1SCA (Product Code: 03020XQR) is the system control, communication and auxiliary processing unit designed for the Huawei OptiX OSN 7500 II intelligent optical switching system. As the primary control board of the OSN 7500 II platform, the SCA performs the synchronous equipment management function (SEMF) and message communication function (MCF), and processes protocol packets.

The TNN1SCA is part of the N1SCA series and serves as the main control and communication processing unit for the OSN 7500 II subrack. It is a critical component for service configuration, grooming, performance monitoring, and alarm collection within the OptiX OSN 7500 II system.

• Metropolitan Area Network (MAN) Backbone – Serves as the main control unit for optical core switching (OCS) equipment at the metropolitan backbone layer

• Service Scheduling Nodes – Provides system control and communication for service scheduling at the metropolitan backbone layer

• Carrier-Grade Networks – Critical control board for telecom core networks requiring high reliability and 1+1 redundancy

• Hybrid TDM/Packet Networks – Supports pure packet mode, hybrid networking (packet + TDM overlay), and pure TDM mode applications

• Multi-Service Transport – Enables efficient data transmission for voice, video, and data services

The OSN 7500 II system with TNN1SCA supports a comprehensive range of interfaces and services:

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