72-4017315-01 Rev B
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Introduction
The Model DPC2203C VoIP Cable Modem provides broadband
network operators with a cost-effective way to offer standard
telephone service along with high-speed data services to subscribers.
The DPC2203C features a highly integrated Embedded Multimedia
Terminal Adapter (EMTA) with two RJ-11 telephony ports for
conventional telephones or fax machines. In addition, the DPC2203C
contains both a 10/100Base-T Ethernet port and a USB 1.1 port to
provide connectivity for high-speed data services or other Internet
appliances. The DPC2203C modem also includes an internal Lithium-
Ion cartridge-style battery for convenient backup power.
This chapter provides an overview of the outstanding design and
performance features of the DPC2203C, the front and back panel
components of the cable modem, and a theory of operation for cable
modems for successful installation and operation of the cable modem.
This chapter also provides the requirements for the cable system and
the user’s site.
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Chapter 1
Introducing the Model
DPC2203C VoIP Cable Modem
In This Chapter
DPC2203C Features ................................................................................ 2
DPC2203C Components ........................................................................ 4
Theory of Operation ............................................................................... 7
Summary of Contents for DPC2203C
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