Multi-channel traffic node – Comtech EF Data MIDAS 4 System and Design User Manual
Page 100
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System and Design Manual, Revision 2
6–2 Traffic
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A multi-channel traffic node consists of:
• SNM-1000 Node Control Modem
• Traffic modems
The SNM-1000 can manage up to 30 traffic modems using an EIA-485 bus.
The traffic modems recommended by Comtech EF Data are the SDM-300A
CDM-550, CDM-600, or CiM-550 Satellite Modem, (however, other
Comtech EF Data modems may be used). The SNM-1000 has an EIA-232
user port for requesting circuit setup and termination, sending and receiving
service terminal messages, installation and diagnostics. A multi-channel traffic
node configuration is illustrated in Figure 6-1.
Figure 6-1. MIDAS Multi-Channel Traffic Node Configuration
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