Comtech EF Data SMS-7000, Installation And Operation Manual

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SMS-7000 Modem Protection Switch Operation
Rev. 3 3–31
3.5.2.2 Prime
The mode of the backup to which the prime is assigned (Independent or Dependent)
determines the menu provided for the prime by the system.
•
Address — Enter a 3-digit decimal address for remote communications.
•
Mod/Demod, ON or OFF — Must be ON for consideration by the switch
algorithm.
•
Priority — This assignment, and the prime modem # (1 through 8), define the
overall priority used by the switch algorithm when a modem failure occurs. If the
prime is backed up by an independent backup, RX and TX priorities are assigned
separately.
•
Delay — Enter desired delay. If independent, enter delay for Mod and Demod.
To switch properly in dependent mode, the prime modem demods must have
input from a source modem other than their own. Otherwise, when the delay is
set to NONE, the switch will oscillate between prime and backup modems. This
occurs because the output of the modulator has been interrupted while the whole
modem attempts to switch.
•
Breakout Configuration — Select from available options, as applicable.
3.5.2.3 Load/Verify
Modem configuration must be loaded by the switch or the switch will not operate
properly.
•
Load — If any modem configurations have been changed, they must be loaded
prior to exiting the configuration menus. A load may be done for an individual
modem, or all modems.
•
Verify — Retrieves the configuration from a modem, and compares it to the
configuration stored in the switch. This ensures the switch uses the proper
configuration data when preparing a backup for service.
Note: Check the Fault menus for any reported problems with the loading or
verifying.