Cisco RF Gateway 1 Modules, Configuration Manual

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Chapter 13 Encryption and Scrambling
174 78-4025112-01 Rev H0
Event Information Scheduler
The EIS is the functional unit in the CA System that holds the schedule,
configuration, and other information required for the complete CA system.
To start a scrambling event, the EIS provides the SCS with a SCG provisioning
message. The message contains a list of services and/or elementary streams that
must be scrambled at the same time with the same CW and a list with ECM groups
for which ECMs must be generated. An ECM group contains the necessary
information, like Super_Cas_ID, ECM_ID, and AC, to bind an ECM stream to a CA
provider.
To stop a scrambling event, the EIS sends a SCG provisioning message update to the
SCS. The ECM group for the event of which scrambling must be stopped is removed
from the SCG provisioning message. The following illustration shows a SCG
provisioning message.