Comtech EF Data CRS-150 - Manual (Page 17)

1–1
Chapter 1. INTRODUCTION
1.1 Overview
Figure 1-1. CRS-150 1:1 Redundancy Switch
The CRS-150 1:1 Redundancy Switch module, shown in Figure 1-1, is a companion product for
use with the CDM-600 Satellite Modem.
Designed to continuously monitor a pair of modems (Units ‘A’ and ‘B’) in a 1:1 redundant
configuration, the CRS-150 automatically switches data and IF signals from the failed online
modem to the standby modem in the event of an equipment failure or undesired traffic condition.
Traffic paths are fully protected, and the system operator can have increased confidence that
equipment failures will not adversely affect system availability.
A 1:1 redundancy system comprises an online modem, a redundant (standby) modem, and the
CRS-150 1:1 Redundancy Switch. Note that the CRS-150 is intended for mounting at the rear of a
pair of modems in a 19” rack system.
The CRS-150 is an accessory product designed specifically for the Comtech EF
Data CDM-600 modem, and must not be used with any other equipment.
For correct operation of the CRS-150, the CDM-600 modems must have Firmware
Version 1.1.0 (or higher). If the modems do not meet this requirement, please
contact Comtech EF Data Customer Support to arrange to receive a free Flash
upgrade.