Cisco Headend System Release 2.7 Release Notes

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Switched Digital Video: Optimizes Bandwidth Utilization 
4012155 Rev B 
33 
 
Switched Digital Video Benefits 
The SDV solution provides the following benefits to cable service providers: 
 
Enhanced bandwidth management 
Provides an immediate bandwidth savings, compared with the linear 
delivery of broadcast content 
Increases in effective bandwidth allow for expansion of HD, VOD, Voice over 
Internet Protocol (VoIP), and high-speed data (HSD) 
Allocated bandwidth demand is driven by viewership (not the number of 
programs offered) 
 
Specialized broadcast program tiers 
Create additional specialized content tiers for smaller demographic groups 
Potential source of new premium subscriptions 
 
Distributed resource management 
Resources (QAM modulators and Ethernet switch/routers) supporting 
multiple applications are managed by a single (master) resource manager, 
thus enabling sharing of those resources by all the applications, including 
digital service, VOD, SDV, and traditional broadcast, to name a few 
Channel changes for high-speed, real-time applications (such as SDV) are 
managed by distributed application-specific servers 
 
Performance 
Channel change times are transparent to home consumers (SDV channel 
change times are essentially equivalent to digital broadcast channel change 
times) 
 
Viewership statistics 
Track and report channel change information for optimal system 
performance and bandwidth management, pre-setting highly viewed 
programs 
Use information to optimize your programming options