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2 backup – Comtech EF Data SMS-301 User Manual

Page 42

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Operation

SMS-301 Redundancy Switch

3-4

Rev. 3

3.2.2.2 Backup

To configure the 1:1 switch for operation with the backup modem, set the following:

Address

Enter a 3-digit decimal address for remote communications.

Mod/Demod

ON or OFF; Must be ON for consideration by the switch algorithm.

Delay

Enter the desired delay. If INDEPENDENT mode switching is selected,
enter delay for Mod and Demod.

Verify

Enable or disable Automatic Verify. This can be used to signal
configuration changes between modems.

Load

Use the Load Modem A

→B option under the Utility Modem Control

menu on the 1:1 switch to automatically configure the backup modem to
the prime modem configuration.

Note: If the backup modem is not to be configured to match the prime modem, the
programming of the backup modem shall be performed manually.