Cisco 7246VXR - uBR Router User Manual

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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter 1 Overview of Cisco uBR7200 Series Software
DOCSIS and CMTS Interoperability
Figure 1-2 EuroDOCSIS and STB Architecture
DOCSIS-Compliant Downstream Signals
Downstream signals are modulated using 64 or 256 Quadrature Amplitude Modulation (QAM-64 or
QAM-256), based on the cable
interface card used, your cable plant, and the significance of the data.
DOCSIS defines the messages and data types for CMTS to cable modem (or cable modem in an STB)
PSTN
Satellite
feed
Satellite
feed
Off-air
channels
Off-air
channels
Receiver
MPEG encoder
Remultiplexer
and modulators
Local streaming
media servers
Local streaming
media caches
STB Internet
application servers
MPEG
VoD server
Web caches
Hub
Cisco Universal
Broadband Router
(uBR7200)
HFC
network
Node
STB
Regional streaming
media servers
Regional streaming
media caches
Streaming media
manager
PSTN
Cisco GSR 12000
high-speed router
Headend
Firewall
High-speed
router
(Cisco
GSR 12000)
Regional data center
RF
OC-3 (155-Mbps) to
OC-48 (2488-Mbps)
fiber ring
Hub
Hub Hub
Cisco subscriber
registration center
STB Internet
application servers
Proxy servers
Billing system
Receiver
MPEG
encoder
Remultiplexer
and modulators
Ad insertion
Internet
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Cisco 7246VXR - uBR Router Specifications

General

Brand	Cisco
Model	7246VXR - uBR Router
Category	Network Router
Language	English