PART A - MOBILE SUBSCRIBER EQUIPMENT
Overview. MSE is being fielded to both active and reserve component Army units. It is
replacing the current tactical communications systems located at corps and division to modernize
tactical communications. MSE is an area common user system that provides secure, automatic
digitized voice, data, and facsimile communications to both static and mobile users at corps and
division. It provides the maneuver commander with the mobile communications needed to
accomplish the mission on a dynamic, rapidly changing battlefield.
MSE Equipment and Capabilities. The MSE system consist of switching equipment,
transmission equipment, network control facilities, mobile subscriber access equipment, and
a. Switching Equipment.
(1) Node Switch AN/TTC-47 provides automatic switching capability for the MSE
system. It is the hub of the MSE network. Functional characteristics of the switch include
automatic tandem switching, key generation, secure digital voice orderwire, and flood search
routing. The node switch is configured in two S-250 shelters (an ON-306 switching shelter and
an OL-413 operations shelter), each transported on a high mobility multipurpose wheeled vehicle
(HMMWV). The switching shelter provides the external interface, circuit switching and
associated functions. The operations shelter proves the central processing and operator interface
functions. A PU-753 10-kw trailer-mounted diesel generator set provides power to both
assemblages. The interior view of the switching shelter is shown in Figure 1-1. The interior
view of the operations shelter is shown in Figure 1-2, page 1-4.
(2) Large Extension Node Switch (LENS) AN/TTC-46 provides wire line service for
up to 176 subscribers. The LENS is usually deployed to support large command posts (CP) such
as a corps main or corps support command (COSCOM). Functional characteristics of the
equipment include a network access switch for wire subscribers, automatic switching service for
wire and mobile subscribers, secure digital voice orderwire, and interface for combat net radio
and commercial offices. The LENS is configured in two S-250 shelters (an ON-305 switching
shelter and an OL-412 operations shelter). Each shelter is transported on a HMMWV. The
switching shelter and operations shelter provide the same basic functions as the switching and
operations shelter for the node switch. Power to both assemblages is provided by a PU-753 10-
kw trailer-mounted diesel generator set. The interior view of the switching shelter is shown at
Figure 1-3, page 1-5. The interior view of the operations shelter shown in Figure 1-4, page 1-6.