Cisco Headend System Release 2.7 Design Guide
Chapter 2 Elements of the SDV System
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The Netcrypt Bulk Encryptor receives SDV content from the DCM staging processor.
The SDV content is encrypted based on the DNCS control, then transmitted to edge
switches.
The SDV content is encrypted based on the DNCS control, then transmitted to edge
switches.
D9900 DCM (Optional)
The D9900 DCM is a compact MPEG processing platform that supports extreme
video processing capability. The D9900 DCM comes in a 2RU chassis with hot
swappable and redundant power supplies. The unit can be configured with up to
four I/O cards, with each card having either ten ASI ports or two pairs of GbE ports.
Additionally, the DCM can be fitted with up to four co-processor cards to support
advanced MPEG processing functions. Because the cards are designed around
general-purpose Field-Programmable Gate Arrays (FPGAs), the DCM will be able to
support a multitude of advanced functions in the future through simple code
downloads.
video processing capability. The D9900 DCM comes in a 2RU chassis with hot
swappable and redundant power supplies. The unit can be configured with up to
four I/O cards, with each card having either ten ASI ports or two pairs of GbE ports.
Additionally, the DCM can be fitted with up to four co-processor cards to support
advanced MPEG processing functions. Because the cards are designed around
general-purpose Field-Programmable Gate Arrays (FPGAs), the DCM will be able to
support a multitude of advanced functions in the future through simple code
downloads.
The DCM supports up to 8 Gbps of input and output capability. Each of the four co-
processing cores is capable of transrating, statistically multiplexing, or rate limiting
up to 500 standard definition (SD) streams or 125 high-definition (HD) streams. Each
of the cores is also able to perform digital program insertion (ad splicing) on up to
250 simultaneous SD programs. This high processing power may be used for future
applications such as H.264 and VC-1 to ensure that the product meets evolving
architectures.
processing cores is capable of transrating, statistically multiplexing, or rate limiting
up to 500 standard definition (SD) streams or 125 high-definition (HD) streams. Each
of the cores is also able to perform digital program insertion (ad splicing) on up to
250 simultaneous SD programs. This high processing power may be used for future
applications such as H.264 and VC-1 to ensure that the product meets evolving
architectures.
In SDV applications, the DCM acts as a signal groomer. It converts variable bit-rate
streams to constant or clamped bit rates, and converts multi-program transport
streams to multiple single program transport streams. The DCM also converts from
various input interfaces to Ethernet/IP. The DCM may be used to insert ads into
SDV streams.
streams to constant or clamped bit rates, and converts multi-program transport
streams to multiple single program transport streams. The DCM also converts from
various input interfaces to Ethernet/IP. The DCM may be used to insert ads into
SDV streams.
DHCT
All of our DHCTs can support SDV.
Switch/Router
A key aspect of the SDV architecture described here is that SDV uses standard IP
multicasts and the actual switching is done in standard IP routers with GbE
interfaces. This makes it possible to leverage many existing VOD networks and
allows the SDV network to evolve with IP technology and infrastructure advances.
multicasts and the actual switching is done in standard IP routers with GbE
interfaces. This makes it possible to leverage many existing VOD networks and
allows the SDV network to evolve with IP technology and infrastructure advances.
SDV in an RCS Environment System Diagram (Optional)
The following system diagrams show the major hardware components that are used
when an SDV architecture using classic SDV servers or USRM is deployed in an RCS
environment. RCS is an optional configuration.
when an SDV architecture using classic SDV servers or USRM is deployed in an RCS
environment. RCS is an optional configuration.