Cisco Headend System Release 2.5 Installation Guide
Chapter 3 Setting Up Hubs, MPEG Sources, MQAM Modulators, PCGs, and SCSs
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4017650 Rev C
Add an SCS
Introduction
After you add an MPEG source, if you are using a third-party EIS and a third-party
scrambler (on a third-party SCS) for scrambling the stream, you must add this SCS to
the DNCS database. An SCS is responsible for generating the CWs (for every
Crypto-period cycle) for a given session. The SCS requests the ECMs from the PCG
via the SCS interface (for every Crypto-period cycle) by sending the CW with session
information for every Crypto-period cycle. The PCG then sends the completed ECM
to the SCS. The SCS will encrypt the transport stream with the CW and insert the
ECM in the stream.
scrambler (on a third-party SCS) for scrambling the stream, you must add this SCS to
the DNCS database. An SCS is responsible for generating the CWs (for every
Crypto-period cycle) for a given session. The SCS requests the ECMs from the PCG
via the SCS interface (for every Crypto-period cycle) by sending the CW with session
information for every Crypto-period cycle. The PCG then sends the completed ECM
to the SCS. The SCS will encrypt the transport stream with the CW and insert the
ECM in the stream.
The SCS needs an interface to communicate with the PCG on a private network, and
it needs another interface to communicate with the SI-Server.
it needs another interface to communicate with the SI-Server.
Before You Begin
Before you begin, you must have your network map and the SCS modeling
parameters. If you cannot locate your network map, refer to Customer Support (on
page 190). You must also have the following information:
parameters. If you cannot locate your network map, refer to Customer Support (on
page 190). You must also have the following information:
Name used to identify the SCS
NIC-IP address for the interface on the SCS that will communicate with the PCG
on a private network (from your system administrator)
on a private network (from your system administrator)
MAC address for the interface on the SCS that will communicate with the PCG
on a private network on the SCS (from your system administrator)
on a private network on the SCS (from your system administrator)
ID given for the SCS device
Maximum SCS session count
Name of the PCG to which it will talk to for ECM
Name of the headend containing the PCG
Number identifying the transport stream going from the SCS out to the hubs on
your system
your system
Number(s) identifying the transport stream(s) of the associated MPEG source
that is logically connected to the input port on this SCS
that is logically connected to the input port on this SCS
Type of modulation the SCS device uses
Frequency of the channel being used to send data from the SCS to the hubs on
your system
your system