C H A P T E; Introduction - Cisco Remote PHY Shelf 7200 Software Configuration Manual And Command Reference

Cisco Remote PHY System Overview
Finding Feature Information
Your software release may not support all the features that are documented in this module. For the latest
feature information and caveats, see the release notes for your platform and software release. The Feature
Information Table at the end of this document provides information about the documented features and lists
the releases in which each feature is supported.
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Introduction

Driven by market evolution towards triple-play services, cable operators in emerging markets are seeking
standardized and digital fiber-based solutions for economical and future proof access technologies. Much of
the demand is driven by the need to provide higher bandwidth packet transport for Internet connectivity, video
and voice services.
Data Over Cable Systems Interface Standard (DOCSIS
and thus has strong interoperability between system providers. It also provides robust Quality of Service (QoS)
methods, ensuring packet delivery during periods of network congestion. Traditionally, DOCSIS runs on
linear fiber (or HFC) to provide service and is not naturally applicable for digital fiber. Cisco has bridged the
gap by introducing a new access technology called the Remote PHY.
Existing Architecture
In the emerging markets, most triple-play consumers live in multi-tenant buildings (referred to as Multi
Dwelling Units or MDU) with the number of residents usually being less than 500 residents per building or
cluster. These buildings are typically served by fiber with one of several "final 100 meter" technologies
installed in the buildings. These technologies include fiber, twisted pair, Ethernet, and coaxial. Cable operators
have access to the cable in the building and use this cable for their services. Several technologies exist for
enabling two-way services over cable. These include a number of proprietary and vendor-specific methods.
However, a standards-based approach to using cable is typically preferred by operators, since this ensures
vendor interoperability.
Introduction, on page 1
Hardware Compatibility Matrix for Cisco Remote PHY Shelf 7200, on page 2
Benefits, on page 2
Cisco Remote PHY Shelf 7200 Network, on page 2
Cisco cBR-8 Line Card for Remote PHY, on page 3
Cisco Remote PHY Shelf 7200, on page 4
Cisco Remote PHY Shelf 7200 Software Configuration Guide for Cisco Remote PHY Shelf 7200 Software 1.1
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C H A P T E R
®
) is a standardized technology for services over cable
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