Technical Communications Corporation's DSD 72B-SP(I) is an industrial SONET/SDH encryption system designed for secure network encryption. It provides strategic-level encryption of voice, data, and video communications over fiber optic networks, offering protocol-agnostic path encryption for enterprises and governments to secure global mission-critical networks. The DSD 72B-SP(I) operates at wirespeeds of 155.52 Mb/s and 622.08 Mb/s, offering flexible configurations and seamless integration with existing or new networks without modification or performance impact.