Huawei 020TLC10B7000138-Y3-SSN6GSCC SSN6GSCC Telecom System Card / Module

The Huawei SSN6GSCC is a System Control and Communication board (GSCC), the central control unit for the Huawei OptiX OSN 3500 and OSN 7500 SDH transmission platforms within the wider OptiX OSN transport family. GSCC boards manage system control, orderwire voice-channel processing, inter-board communication across the subrack, and continuous monitoring of the system’s power supply status. Because a control-board failure can affect an entire subrack, GSCC boards are typically deployed in 1+1 redundant pairs so a standby unit can take over control functions automatically if the active board develops a fault. Several functional GSCC variants exist across the OSN3500/OSN7500 hardware generations (N1, N3, N4, N6), so it is worth confirming against your existing subrack’s board list before fitting a replacement or spare. This particular unit carries material code 020TLC10B7000138-Y3, a distinct production batch from other GSCC boards in the same OptiX OSN family. Tech-Star (UK-based, shipped worldwide) supplies tested Huawei OptiX control, interface and power boards; our engineers can help confirm the right GSCC variant and material code for your OSN3500/OSN7500 configuration.