Cisco Headend System Release 2.7 ユーザーガイド
About This Guide
4000308 Rev B
v
About This Guide
Purpose
Switched digital video (SDV) is a technology that allows cable operators to recover
bandwidth from infrequently-viewed channels by making these channels
"on-demand." Instead of sending all channels to the set-top boxes, lightly viewed
channels are put into a switching pool and only sent to the set-top boxes when
viewers tune to them.
bandwidth from infrequently-viewed channels by making these channels
"on-demand." Instead of sending all channels to the set-top boxes, lightly viewed
channels are put into a switching pool and only sent to the set-top boxes when
viewers tune to them.
This guide provides procedures to help you keep your SDV system running as
expected. This guide explains various tools that you can use to monitor and
troubleshoot SDV systems.
expected. This guide explains various tools that you can use to monitor and
troubleshoot SDV systems.
Scope
The procedures in this document only apply to Digital Broadband Delivery System
(DBDS) networks operating with the Cisco Resident Application (SARA).
(DBDS) networks operating with the Cisco Resident Application (SARA).
System Prerequisites
The Digital Network Control System (DNCS) must meet the following conditions to
support SDV:
support SDV:
System Release (SR) 4.2 or later
SDV feature enabled for DNCS
SDV feature enabled for Netcrypt
SSP 2.4 Compliant
Audience
This guide is for system operators who are responsible for operating and maintaining
SDV systems. This guide assumes the operator has experience using the UNIX
operating system.
SDV systems. This guide assumes the operator has experience using the UNIX
operating system.