Comtech EF Data CRS-170A - Manual (Page 49)

4–1
Chapter 4. MODEM
AND
SWITCH
CONFIGURATION
4.1 Overview
To avoid damage either to the modem pair or the CRS-170A switch, it is important that
you follow this sequence of configuration:
• First, configure both modems for 1:1 redundant operation as directed in this chapter. This
chapter organizes the modem-specific sections and any specific interface configuration
examples as follows:
For Modem... See Chapter Sect.
CDM-625/A 4.2
CDM-850 or CDM-840 4.3
CDM-760 or CDM-750 4.4
CDM-570L/AL 4.5
CDM-710GL, CDM-710, or CDM-700 4.6
CDM-600L (CLM-9600L) 4.7
SDM-300L3 4.8
• Second, once you properly configure both modems for 1:1 redundant operation, set the
DIP switches on the CRS-170A to the correct modem selection. See Sect. 4.9 CRS-170A
Switch DIP Settings for details.
• Third, once you properly configure both modems and the DIP switches, connect the control
and IF cables between the powered OFF modems and switch. See Chapter 5. CABLES and
CONNECTIONS for details.