Cisco Headend System Release 2.5 User Guide

 

4024447 Rev C 

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The growth in available services to the service provider has far outpaced the 
increases in access network bandwidth due to upgrades and rebuilds. This same 
expansion of available services has also created a situation in which, at any given 
time and in any given service group, most services are not being viewed. Thus, edge 
device and access network bandwidth are wasted when many of those services are 
continuously broadcast to subscribers that are not watching them. Switched Digital 
Video (SDV) is a technique that recaptures such wasted access network bandwidth 
by delivering selected services only where and when users are actively requesting 
service. This technique is performed through program switching, which is also 
known as SDV. 

SDV is configured into the SDV manager. Therefore, to provision SDV services on 
the Digital Network Control System (DNCS), parameters must be configured into 
the SDV manager on behalf of the SDV server. 

 

This document provides instructions for setting up and configuring SDV services on 
the DNCS. 

 

The procedures covered in this document only apply to Digital Broadband Delivery 
System (DBDS) networks with SDV and operating with System Releases (SRs) SR 
2.8/3.8/4.3. These procedures describe how to provision SDV services on the DNCS, 
as well as how to configure the Service Application Manager (SAM) and other 
features so that the Digital Home Communications Terminals (DHCTs) can display 
SDV services. 

Important: This document does not describe how to stage SDV servers. For 
instructions on installing SDV servers, refer to Series D9500 Switched Digital Video 
Servers Installation and Operation Guide. 

 

This document is written for DBDS system operators and engineers, DNCS 
operators and engineers, field engineers, and Cisco Services engineers.