Cisco PowerKEY CableCARD Module 800 Guida All'Installazione
December 2006
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Setting Up Dual Sources and
Hiding Services from One-Way CableCARD™ Hosts
Overview
Introduction
System operators have identified a need for CableCARD™ hosts to tune different
sources when a particular service is selected based on the capabilities of the host.
Fully interactive set-tops with a CableCARD slot can operate as a two-way
CableCARD host, while the majority of retail CableCARD hosts do not and are one-
way only. For example, the vast majority of CableCARD host televisions sold at
retail stores are one-way devices and cannot perform interactive services like VOD.
A new feature in the Digital Network Control System (DNCS) allows you to specify
A new feature in the Digital Network Control System (DNCS) allows you to specify
two sources for a single Service Application Manager (SAM) service. This feature
allows you to identify one source for two-way CableCARD hosts, as well as existing
set-tops with embedded security, and another source for one-way CableCARD hosts.
In addition to adding the ability to tune to a different source, a second capability has
In addition to adding the ability to tune to a different source, a second capability has
been provided. You can now hide services from a one-way CableCARD host. This
additional capability allows you to offer selected services to only the existing
embedded security set-top population as well as to the newer two-way CableCARD
host devices.
How One-Way CableCARD Hosts Get Services
The DNCS builds the channel map (that is passed from the CableCARD module to
the CableCARD host) by looking for SAM services with a watchtv or music
application URL. Typically, any service using one of these URLs will be put into the
CableCARD channel map. The DNCS allows you to add an extension to the SAM
services application URL in order to cause one of the following behaviors:
The Cable Card host will tune to an alternate source ID when the service is
selected.
The DNCS will not include the service in the CableCARD channel maps when
they are built.