user manual

Configuring Headend Broadband Access Router Features
Headend Overview
Cisco IOS Multiservice Applications Configuration Guide
Figure 106 Topology of a Typical Broadband Network
Cisco uBR7200 series routers support the DOCSIS 1.0 specifications (and static multiple service
identifiers (SIDs) for voice) for the following high-speed data-over-cable interfaces:
• RF interfaces between the Cisco uBR7200 series (CMTS) and the cable network—Downstream and
upstream traffic.
• MAC sublayer and associated interfaces.
Internet
ATM, 100BT, 10BT
100BT
Analog TV
signals
Digital TV
signals
Upconverter
ISP
DS-RF 54-860 Mhz
Fiber
Transceiver
80 km
Fiber node
(Telephone pole,
underground box)
Two-way
distribution
amplifier
1000 ft
Drop box
Tap
Cable modem
(Cisco uBR904)
100BT
IF
RF
Combiner
100BT
Proxy server
WAN
Cisco
uBR7246
US-RF
5-42 MHz
MSO: Multiple Service Organization
11278