Instruction manual

ACU-1000 Operations Manual
6-1
6 Options
6.1 STU-3 Option
Interfacing a STU-III encrypted phone to the ACU-1000 is accomplished by performing the
following procedures.
6.1.1 Equipment Required
The equipment required is the STU-III Phone Interface, Raytheon P/N 5961-295000, along
with an ACU-1000 that has a DSP module available for connection to the STU-III interface.
6.1.2 Required Applications
The STU-III interface, when used with the ACU-1000, allows a STU-III user to access any
ACU-1000 net. Please reference Figure 6-1 for an example of a standard system utilizing a
STU-III phone.
Figure 6-1 STU-3 Basic System