GSM Interceptor, Passive GSM Interception System, off the air GSM Interception, A5.1/ A5.2, Online Decoding, GSM Monitoring, GSM 900 -1800 bands, cipher key generation, encryption algorithms, duplex communication, Encryption, Monitoring, TMSI, IMSI, IMEI, SCL-5020, Shoghi GSM, COMINT, Communication Interception, Crypto Products, Information Security, Electronic Warfare, Communication Intelligence, Signal Intelligence, Technical Support, Research And Development, Trainings, Software Development, Shoghi, Shoghi Communications Ltd