(3) Small Extension Node Switch (SENS) AN/TTC-48 provides wire line service for
up to 26 or 41 subscribers, depending on the switch version. The SENS is deployed to support
smaller CPs, such as a military intelligence battalion or engineer battalion headquarters in a
division. Functional characteristics of the equipment include local secure switching and MSE
network access, provisions for net radio interface and commercial interface, secure digital voice
orderwire, and two configurations (V1 and V2). The SENS is housed in a single S-250 shelter
security (COMSEC) equipment to provide secure digital communications support for a CP.
Power for the shelter is provided by a PU-753 10-kw trailer-mounted diesel generator set. The
interior view of the SENS shelter is shown in Figure 1-5.
Figure 1-5. AN/TTC-48(V) SENS