Photo of front panel. Approximately 19 inches wide, 7 1/2 inches high with rack mounting ears and handles. Color: desert tan. 5 pin audio connectors lableed A and B at upper left and upper right followed by 2 groups of push buttons each group labelled 1,2,3 in red and 4,5,6 in black. Below push buttons are 3 more connectors labelled 1,2, and 3 in red on center left side. Name, model, serial number and manufacturer's data on lower right. This is a description, not a specification.
The TEMPEST INC. Model 9901 Secure Voice Switching Unit connects any of up to six handsets to any of up to six RED or BLACK outputs, providing extremely high levels of isolation, and prohibiting the deliberate or accidental connection of any RED output to any BLACK output.
The 9901 has an integral control panel, and is designed for use in an office or communication center. It can be operated on a desk or rack mounted. It is completely passive and draws absolutely no power.
The 9901 comes in the options shown below.
9901-1X6: 1 INPUT, 3 RED OUTPUTS, 3 BLACK OUTPUTS:
9901-2X6: 2 INPUTS, 3 RED OUTPUTS, 3 BLACK OUTPUTS:
9901-3X6: 3 INPUTS, 3 RED OUTPUTS, 3 BLACK OUTPUTS:
Other options of up to 6X6 are available. The units can be upgraded.
The 9901 is unconditionally guaranteed to meet all current US and NATO TEMPEST Standards for its lifetime.
Subjects: TEMPEST, secure voice, emsec, secure voice, infosec, C4ISR