Keep Echelon from listening. (Digest).

In light of recently released information recognising the existence of the international `Echelon' signal intelligence (sigint) network, Albrecht Telecommunications developed its SEU-8200 ciphering module for highly secure communication over analogue radio channels. The system is based on complex digital signal processing techniques and provides a speech encryption algorithm that avoids the disadvantages of existing Vocoder-based units. The SEU-8200 is neither susceptible to attack by eavesdroppers nor decipherable by using current analytical methods. The ciphering system can be integrated into existing radio networks without the need to change either communication structures or hardware. A ruggedised military version is available.