The STL 2051 is a true portable modem intercept solution to be used in operation where direct accesses to the target lines are required.

This unit can be deployed in the field close to the target or installed on a permanent basis in e.g. a monitoring center. Due to the unique design of the physical line interface the system is completely undetectable by the target and transparent to all parties on the line making it ideal for all covert operations. The onboard set of features enable you to solve your technically difficult monitoring tasks in a non-technical way and achieve your results with minimum effort.

The decoding software is a layered protocol decoder. The received packets are being sorted and treated dependent on the type of communication taking place like e-mail including SMTP & POP3, web surfing(HTTP) and others.