Cisco DNCS System Release 2.7 3.7 4.2 设计指南
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Introducing DOCSIS
4000358 Rev B
System Elements and Interfaces
Introduction
This section describes the system elements and interfaces that exist for a DBDS and
shows a simplified diagram of the DBDS architecture that supports DOCSIS. This
section also introduces the network elements, and DHCT and communication
interfaces required for a DOCSIS environment. In addition, this section describes the
DOCSIS Set-top Gateway(DSG), which forwards DBDS broadcast data to DHCTs
operating in DOCSIS mode over the DOCSIS channel through a DSG-compliant
CMTS.
A Simplified View of the System Architecture
The following diagram shows a simplified physical view of the system architecture
and network interfaces required to implement DOCSIS in the DBDS.