Cisco Headend System Release 2.7 安装指南
Define Service Sources and Build Sessions
4017650 Rev C
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Define Service Sources and Build Sessions
Introduction
After you add a service source to the DNCS database, you must define parameters
for the source so that the system knows how to process the service content. When
you define a digital service source, you also build a session. Sessions define and
allocate the resources that the network uses to deliver service content. When you
build a session, you identify the source equipment where the service content
originates, such as a D96xx re-multiplexer. You also identify the distribution
equipment that places the service content onto the HFC network, such as an
SCS/MQAM modulator. It may help to think of a session as a pipeline through the
PowerKEY DVB System that is allocated to deliver specific service content.
for the source so that the system knows how to process the service content. When
you define a digital service source, you also build a session. Sessions define and
allocate the resources that the network uses to deliver service content. When you
build a session, you identify the source equipment where the service content
originates, such as a D96xx re-multiplexer. You also identify the distribution
equipment that places the service content onto the HFC network, such as an
SCS/MQAM modulator. It may help to think of a session as a pipeline through the
PowerKEY DVB System that is allocated to deliver specific service content.
Important: Refer to Appendix A, Sources and Services Naming Conventions (on page
191) before adding and defining service sources.
191) before adding and defining service sources.
Before You Begin
Before you define a digital service source, you must have the following information:
Name of the service source as you defined it when you added the source
Number of the channel where the service will be displayed
Service source ID as you defined it when you added the source
MPEG program number or Elementary Stream Program Identifier from your
content service provider
content service provider
Amount of bandwidth (in Mbps) to allow for the service (from your content
service provider)
service provider)
Name of the output distribution equipment that will be receiving the service
content from the service source (refer to your network map)
content from the service source (refer to your network map)
Important: Refer to Appendix A, Sources and Services Naming Conventions (on page
191) before defining service sources.
191) before defining service sources.
Time to Complete
Defining a digital service source takes approximately 20 minutes to complete.
Performance Impact
Defining a digital service source does not impact network performance. You can
complete this procedure at any time.
complete this procedure at any time.