DSD 72B-SP by Technical Communications Corporation (TCC) is a SONET/SDH encryption system designed for securing optical networks. It provides encryption capabilities for large-scale optical network infrastructures, securing voice, data, and video communications over fiber optic networks. The device offers strategic-level encryption for enterprises and governments, providing protocol-agnostic path encryption with automated KEYNET key and device management. The DSD 72B-SP integrates seamlessly into existing or new networks without requiring modifications or impacting performance. It supports wirespeeds of 155.52 Mb/s and 622.08 Mb/s, and is available in industrial (I) and ruggedized industrial (RI) variants.