Technical Communications Corporation designs, develops, manufactures, distributes, markets, and sells communications security devices, systems, and services worldwide. The company primarily provides video, data, fax, and voice networks. Its products include government systems, such as CSD 3324 SE secure telephone, fax and data system; CSD 3324 SP telephone and fax system; DSD 72A-SP military bulk ciphering system; and DSP 9000 radio encryption system, as well as the HSE 6000 squad radio headset and telephone encryptor for public safety special operations, land mobile radio applications, and for military applications. The company also provides network security systems comprising network encryption systems with centralized key and device management for IP, SONET/SDH, and frame relay networks to secure data in transit from local area network to local area network and across wide area networks. In addition, it offers secure office systems, such as CSD 4100 executive secure telephone and Ci