Cisco Cisco Digital Service Access Node (DSAN) 8211 Installation Guide

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Chapter 2    Introduction 
 
 
 
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Product Overview 
The Cisco DSAN solution provides a cost-effective, flexible, easy-to-deploy system 
for servicing the needs of MDU, hospitality, and other bulk analog accounts. The 
DSAN regenerates up to 82 analog channels of NTSC video at the customer premise 
through the use of bulk MPEG decoder technology. This environmentally hardened 
node product is designed to operate seamlessly within a CATV network for setup, 
provisioning, and billing, fitting easily into existing HFC installations. 
Specifically designed for on-site deployment, the DSAN supports two auxiliary 
inputs, allowing customers to provide up to eight customized local channels (e.g., 
security cameras, DVD players, local bulletin boards, etc.) for their residents or 
guests. The channel lineups for each DSAN can also be configured independently to 
support specific customer needs, allowing service providers to offer a wider variety 
of content. Additionally, the DSAN supports digital pass-through, making it an 
extremely flexible platform that is ideal for customers wanting additional services 
such as HD, VOD, Data, and Voice. 
DSAN Solution 
The DSAN is a device that converts a pure digital plant spectrum to a combined 
spectrum containing both digital and analog output, as shown in the following 
illustration. 
 
 
 
The analog output is recreated from portions of the digital plant spectrum, and 
occupies the 54 to 552 MHz frequency range designated for CATV analog channels. 
The combined digital output (564 MHz to 1 GHz) is available for use by compatible 
receiving equipment such as a set-top box, EMTA, or cable modem.