Cisco Headend System Release 2.7
Correct PSIP Operation
Overview
Introduction
Program and System Information Protocol (PSIP) is a protocol of system
information (SI) that is delivered inband with MPEG content. Cable-ready digital
devices (Hosts) use PSIP to receive navigation and guide information for
unencrypted digital channels. The September 2003 FCC Report and Order
requires that PSIP be carried inband to enable PSIP navigation for Hosts that do
not have a PowerKEY
®
CableCARD™ module, or point-of-deployment (POD)
module, installed.
PSIP support is only required for unencrypted content; PSIP is not used to carry SI
PSIP support is only required for unencrypted content; PSIP is not used to carry SI
for encrypted content. Cable-ready Hosts equipped with a PowerKEY
CableCARD module can decrypt content and are required to receive out-of-band
(OOB) SI data in order to navigate and display encrypted MPEG content.
Purpose
This document addresses concerns of system operators regarding the proper
system configuration for the generation of complete PSIP data. According to the
system release supported on the headend, PSIP must be defined in either the Host
Default Channel Map or the Default Channel Map of the Digital Network Control
System (DNCS). When PSIP is not defined properly, the Host may be unable to
associate an unencrypted digital source with a channel number.
Audience
This document is written for system operators of the Digital Broadband Delivery
System (DBDS). Support engineers who help system operators manage and
troubleshoot the DBDS may also find this information to be useful.
Document Version
This is the second release of this document.