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12.7
C
ONDITIONAL
A
CCESS
(CA)
R
EDUNDANCY
The unit supports CA redundancy, in other words, ECMG and EMMG redundancy. The difference between
ECMG and EMMG redundancy is that ECMG redundancy is actively controlled by the unit, whereas EMMG
redundancy is simply allowing for multiple EMMG IP addresses to connect to the same port.
12.7.1
ECMG
R
EDUNDANCY
ECMG redundancy involves two ECMGs: one Main and the other Backup. If the connection to the Main ECMG is
lost, the multiplexer will automatically switch to the Backup ECMG based on the configuration defined in the
GUI.
ECMs cannot be defined specifically for the Backup ECMG; instead they are automatically generated according
to those defined for the Main ECMG.
In terms of
alarms
:
When the connection to the Main ECMG is lost, a warning alarm will be displayed in the GUI.
When the multiplexer switches to the Backup ECMG, the earlier warning alarm disappears; it is replaced with
another alarm indicating that a switch has occurred.
Connection to the Backup ECMG is only established at the time of switching. In other words, if the Backup ECMG
fails while the Main ECMG is still running, no alarm will be triggered.
Switching between the Main ECMG and Backup ECMG does not affect the service as the CW
will not be changed in the stream until a new ECM is received from the ECMG.
12.7.2
R
EDUNDANCY
C
ONFIGURATION
A redundancy rule for ECMGs can be defined from the
Redundancy
→
CA
tab in the
Navigation Pane
. Insert
appropriate values here and click
Add
.
Before defining the rule, it is necessary to define the Main ECMG from
Conditional Access
→
SCS
→
ECMG
.