Figure 2-23. HHD wire net diagram, main support battalion
3. DISCOM Signal Support Using MSE. MSE is being fielded to both active and reserve component
army units. It is replacing the ATACS, located at corps and division, and was developed because of the
need to modernize tactical communications. MSE is an area common user system (ACUS) that provides
commanders and staff personnel at corps and division with secure, automatic digitized voice, data, and
a. The MSE network at division can be described as a nodal switch system. Node centers are
deployed from the division signal battalion to form a backbone network to provide geographic and area
coverage. The division signal battalion currently has the capability to deploy a maximum of four node
centers.
b. Large extension nodes (LEN) and small extension nodes (SEN) extend from the node
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