Comtech-ef-data MIDAS 4 System and Design Manual de usuario Pagina 22

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System and Design Manual, Revision 2
1–8 Introduction
Multi-Channel
Traffic Node
The multi-channel traffic node consists of Comtech EF Data’s SNM-1000
Node Control Modem controlling up to 30 data and video modems. The
supported traffic modems include Comtech EF Data’s extensive line of
satellite modems, providing the user with a wide range of data rates,
modulation, encoding schemes, and terrestrial interfaces to suit any
application.
The SNM-1000 functions as a dedicated node controller. It manages the traffic
modems, performs call setup and termination under MIDAS control, performs
local monitoring and control (M&C) and reports events, alarms, and call detail
records to the MIDAS Controller. The traffic modems are controlled via
EIA-485 multi-drop buses. The SNM-1000 does not carry user traffic. Figure
1-3 illustrates a traffic site with multi-channel nodes.
Figure 1-3. MIDAS Multi-Channel Traffic Site
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