Cisco Headend System Release 2.7 Design Guide
2
4042275 Rev A
Overview
Overview
Introduction
Direct ADSG (Advanced DOCSIS®* Set-top Gateway) allows system operators to
set up their Digital Network Control System (DNCS) to send the following types
of broadcast DSG data directly to a host device:
set up their Digital Network Control System (DNCS) to send the following types
of broadcast DSG data directly to a host device:
System Information (SI) (ANSI SCTE 65)
Emergency Alert System (EAS) (ANSI SCTE 18)
Extended Application Information Table (XAIT)
To successfully reach the host device, and therefore bypass flow to the
CableCARD™ module, each data flow must include a broadcast tunnel (BT)
header.
Note: Traditionally, a host device that receives broadcast out-of-band (OOB) data
passes it to the CableCARD module. The CableCARD module would reformat the
data and send it back to the host device. This method of flow occurs when the
CableCARD Communications Mode (CCM) is defined on the DNCS as indirect
ADSG.
This application guide is specific to the operation of the Digital Broadband
Delivery System (DBDS) network in a direct ADSG environment for both SARA,
with CableLabs® tru2way™ (formerly OCAP™), and third-party applications. It
also includes guidelines for configuring the DBDS for direct ADSG with BT
headers on the DNCS.
CableCARD™ module, each data flow must include a broadcast tunnel (BT)
header.
Note: Traditionally, a host device that receives broadcast out-of-band (OOB) data
passes it to the CableCARD module. The CableCARD module would reformat the
data and send it back to the host device. This method of flow occurs when the
CableCARD Communications Mode (CCM) is defined on the DNCS as indirect
ADSG.
This application guide is specific to the operation of the Digital Broadband
Delivery System (DBDS) network in a direct ADSG environment for both SARA,
with CableLabs® tru2way™ (formerly OCAP™), and third-party applications. It
also includes guidelines for configuring the DBDS for direct ADSG with BT
headers on the DNCS.
* Data-Over-Cable Service Interface Specification
Purpose
This guide provides guidelines and sample configurations for setting up your
overall system and for configuring the DNCS for direct ADSG with BT headers
using an OOB data path for CableCARD host devices.
overall system and for configuring the DNCS for direct ADSG with BT headers
using an OOB data path for CableCARD host devices.
Scope
The contents of this document apply to sites that are running DNCS System
Release (SR) 5.0. This document provides high-level information that applies to
the configuration of the DBDS network so that ADSG hosts can directly receive
broadcast DSG data (SI, EAS, XAIT, and CDL CVT) from the DNCS. This guide
provides sample configurations; however, it does not include installation or
troubleshooting procedures.
Release (SR) 5.0. This document provides high-level information that applies to
the configuration of the DBDS network so that ADSG hosts can directly receive
broadcast DSG data (SI, EAS, XAIT, and CDL CVT) from the DNCS. This guide
provides sample configurations; however, it does not include installation or
troubleshooting procedures.