User's Manual
RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
21-48 Polycom, Inc.
A dialog box opens with a list of event triggers displayed.
2
Select the appropriate Hot Backup Triggers check boxes:
3
Alternatively, click the Trigger Failover Manually button when you want to trigger the 
Hot Backup manually and activate the Slave MCU.
A confirmation message is displayed.
4
Click Yes to continue the Hot Backup process or click No to cancel the Hot Backup 
process.
Table 21-22 Hot Backup Triggers
Hot Backup Trigger Description
Lost connection with 
management port
Initiates the Hot Backup switch from the Master to the 
Slave MCU when the connection to the management port 
is lost on the Master MCU. This trigger is always set.
Lost connection with media port Initiates the Hot Backup switch from the Master to the 
Slave MCU when the connection with an active media port 
is lost on the Master MCU.
Lost connection with signalling 
port
Initiates the Hot Backup switch from the Master to the 
Slave MCU when the connection with an active signalling 
port is inactive for a duration of 30 seconds on the Master 
MCU. A system flag, ETH_INACTIVITY_DURATION, can 
be added and configured to modify the duration of 
inactivity of the signalling port. Default value is 30 
seconds; Minimum value is 20 seconds.
Lost connection with ISDN card Initiates the Hot Backup switch from the Master to the 
Slave MCU when the connection with an ISDN card is 
disconnected on the Master MCU.










