Figure 2-14 illustrates a SEN (V2) with the capacity to handle network switching for up to 41
subscribers. Signal personnel must closely supervise and monitor the installation of the subscriber
terminals, whatever they may be (telephones, facsimile, teletypewriter, etc), to ensure that the proper
connections have been made to obtain reliable communications throughout the MSE network.
Figure 2-14. SEN (V2) site
c. Mobile subscriber in the air defense units will access the MSE network via user owned and
operated mobile subscriber radiotelephone terminals (MSRT). The MSRT consists of two major
components: the digital subscriber voice terminal (TSEC/KY-68) and the receiver/transmitter RT-1539.
The functional characteristics of the MSRT include: