Cisco Model D-PCG1000 PowerKEY CAS Gateway Installation Guide
Theory of Operation
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A Netcrypt Bulk Encryptor unit uses SimulCrypt encryption to simultaneously
encrypt streams using more than one CA system. However, simultaneous
encryption is not required for VOD where a stream is bound for only one set-top.
For this reason, as well as for performance penalties that may occur in the extra
communication paths and external components, simultaneous encryption is not
recommended or supported for VOD.
encrypt streams using more than one CA system. However, simultaneous
encryption is not required for VOD where a stream is bound for only one set-top.
For this reason, as well as for performance penalties that may occur in the extra
communication paths and external components, simultaneous encryption is not
recommended or supported for VOD.
When using the SimulCrypt support option, control connections are made to a
Netcrypt Bulk Encryptor using the ETHB 10/100 Base-T port. This port requires an
IP address assignment that is on a different IP network than the IP address assigned
to the ETHA 10/100 Base-T control port, which connects the unit to the Application
Server.
Netcrypt Bulk Encryptor using the ETHB 10/100 Base-T port. This port requires an
IP address assignment that is on a different IP network than the IP address assigned
to the ETHA 10/100 Base-T control port, which connects the unit to the Application
Server.
The following diagram shows each stage of the transport stream creation and
encryption process in systems using the SimulCrypt option. Here, the ETHA port is
indicated by the Remote Procedure Call (RPC) interface, and the ETHB port is
indicated by the SimulCrypt Synchronizer (SCS) interface. Numbers in the diagram
correspond to numbers in the table on the following page, which describe each stage
of the stream creation and encryption process.
encryption process in systems using the SimulCrypt option. Here, the ETHA port is
indicated by the Remote Procedure Call (RPC) interface, and the ETHB port is
indicated by the SimulCrypt Synchronizer (SCS) interface. Numbers in the diagram
correspond to numbers in the table on the following page, which describe each stage
of the stream creation and encryption process.
The following table describes how transport streams are encrypted when using the
SimulCrypt option.
SimulCrypt option.