Cisco RF Gateway 1 Modules, Configuration Manual

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Steps To Take
78-4025112-01 Rev H0 183
Configuring Scrambling Specific Parameters
About the SCS Configuration GUI
The SCS allows configuraing the scrambling specific parameters and assigning the
following CA interfaces:

ECMG interfaces

EIS interfaces
Note: The number of CA interfaces that can be assigned to a RF Gateway 1 using the
SCS configurator is restricted to 40.
Entitlement Control Message Generators
To establish communication between the SCS of the RFGW-1 and an ECMG, a TCP
connection has to be made followed by a channel set up. During the connection
process, the SCS requires the IP address and port number of the ECMG to establish
the TCP connection, and needs a channel identifier to set up a channel. The operator
can determine this channel identifier or the SCS can pick a channel identifier from
the free channel identification pool.
The SCS also requires mapping between the Super CAS ID, which is a concatenation
of the CA system identifier, subsystem identifier, and the communication
parameters. Once the channel is established and the EIS triggers the SCS to request
ECMs from the ECMG, an ECM stream is set up.
The number of ECM streams that can be set up between the SCS and the ECMG
within one channel is limited and depends on the CA System.
Load Balancing
For backup and/or load sharing purposes, several ECMGs can be connected to the
RFGW-1. The priority assigned to the communication channel determines if the
ECMGs are used in load balancing or in backup mode. When the channel priorities
of the ECMGs are equal, the ECMGs work in load sharing mode. When the priority
differs, the ECMG with highest priority (= lowest number) acts as the main ECMG
and the ECMG with the lowest priority acts as backup.