Cisco | DPC2203 | Operating instructions | Cisco DPC2203 Operating instructions

Cisco DPC2203 Operating instructions
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DPC2203C VoIP Cable Modem
Installation and Operation Guide
Please Read
Important
Please read this entire guide. If this guide provides installation or operation
instructions, give particular attention to all safety statements included in this guide.
Notices
Trademark Acknowledgements
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its
affiliates in the U.S. and other countries. To view a list of cisco trademarks, go to this
URL: www.cisco.com/go/trademarks.
DOCSIS, EuroDOCSIS, EuroPacketCable, and PacketCable are trademarks of Cable
Television Laboratories, Inc.
Other third party trademarks mentioned are the property of their respective owners.
The use of the word partner does not imply a partnership relationship between
Cisco and any other company. (1110R)
Publication Disclaimer
Cisco Systems, Inc. assumes no responsibility for errors or omissions that may
appear in this publication. We reserve the right to change this publication at any
time without notice. This document is not to be construed as conferring by
implication, estoppel, or otherwise any license or right under any copyright or
patent, whether or not the use of any information in this document employs an
invention claimed in any existing or later issued patent.
Copyright
© 2008, 2012 Cisco and/or its affiliates. All rights reserved. Printed in the United States of
America.
Information in this publication is subject to change without notice. No part of this
publication may be reproduced or transmitted in any form, by photocopy,
microfilm, xerography, or any other means, or incorporated into any information
retrieval system, electronic or mechanical, for any purpose, without the express
permission of Cisco Systems, Inc.
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
Notice to Installers
The servicing instructions in this notice are for use by qualified service personnel only. To reduce the
risk of electric shock, do not perform any servicing other than that contained in the operating
instructions, unless you are qualified to do so.
20070112 SysInstaller 820 English
Notice à l’attention des installateurs de réseaux câblés
Les instructions relatives aux interventions d’entretien, fournies dans la présente notice, s’adressent
exclusivement au personnel technique qualifié. Pour réduire les risques de chocs électriques, n’effectuer
aucune intervention autre que celles décrites dans le mode d'emploi et les instructions relatives au
fonctionnement, à moins que vous ne soyez qualifié pour ce faire.
20070112 SysInstaller 820 French
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IMPORTANT SAFETY INSTRUCTIONS
Mitteilung für CATV-Techniker
Die in dieser Mitteilung aufgeführten Wartungsanweisungen sind ausschließlich für qualifiziertes
Fachpersonal bestimmt. Um die Gefahr eines elektrischen Schlags zu reduzieren, sollten Sie keine
Wartungsarbeiten durchführen, die nicht ausdrücklich in der Bedienungsanleitung aufgeführt sind,
außer Sie sind zur Durchführung solcher Arbeiten qualifiziert.
20070112 SysInstaller 820 German
Aviso a los instaladores de sistemas CATV
Las instrucciones de reparación contenidas en el presente aviso son para uso exclusivo por parte de
personal de mantenimiento cualificado. Con el fin de reducir el riesgo de descarga eléctrica, no realice
ninguna otra operación de reparación distinta a las contenidas en las instrucciones de funcionamiento, a
menos que posea la cualificación necesaria para hacerlo.
20070112 SysInstaller 820 Spanish
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IMPORTANT SAFETY INSTRUCTIONS
Read These Instructions
Keep These Instructions
Heed All Warnings
Follow All Instructions
Power Source Warning
A label on this product indicates the correct power source for this product. Operate this product only
from an electrical outlet with the voltage and frequency indicated on the product label. If you are
uncertain of the type of power supply to your home or business, consult your service provider or your
local power company.
The AC inlet on the unit must remain accessible and operable at all times.
Ground the Product
WARNING: Avoid electric shock and fire hazard! Do not defeat the safety purpose of
the polarized or grounding-type plug. A polarized plug has two blades with one wider
than the other. A grounding-type plug has two blades and a third grounding prong.
The wide blade or the third prong is provided for your safety. If the provided plug
does not fit into your outlet, consult an electrician for replacement of the obsolete
outlet.
If this product connects to coaxial cable wiring, be sure the cable system is grounded (earthed). Grounding provides
some protection against voltage surges and built-up static charges.
Protect the Product from Lightning
For added protection, unplug this apparatus during lightning storms or when unused for long periods
of time. In addition to disconnecting the AC power from the wall outlet, disconnect the signal inputs.
Verify the Power Source from the On/Off Power Light
When the on/off power light is not illuminated, the apparatus may still be connected to the power
source. The light goes out when the apparatus is turned off, regardless of whether it is still plugged into
an AC power source.
Eliminate AC Mains Overloads
WARNING: Avoid electric shock and fire hazard! Do not overload AC mains, outlets,
extension cords, or integral convenience receptacles. For products that require battery
power or other power sources to operate them, refer to the operating instructions for
those products.
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IMPORTANT SAFETY INSTRUCTIONS
Prevent Power Cord Damage
Protect the power cord from being walked on or pinched, particularly at plugs, convenience
receptacles, and the point where the cord exits from the apparatus.
Handling Optional, Rechargeable Battery
This product may contain a rechargeable Lithium-Ion battery to provide stand-by operation in the
event of an AC power failure. Heed the following warning and see the instructions later in this guide
for handling, replacing, and disposing of the battery.
WARNING: There is danger of explosion if the battery is mishandled or incorrectly
replaced. Replace only with the same type of battery. Do not disassemble it or attempt
to recharge it outside the system. Do not crush, puncture, dispose of in fire, short the
external contacts, or expose to water or other liquids. Dispose of the battery in
accordance with local regulations and instructions from your service provider.
Provide Ventilation and Select a Location





Remove all packaging material before applying power to the product.

Do not install this apparatus in an enclosure, such as a bookcase or rack, unless the installation
provides proper ventilation.

Do not place entertainment devices (such as VCRs or DVDs), lamps, books, vases with liquids, or
other objects on top of this product.
Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
Do not place this apparatus on a bed, sofa, rug, or similar surface.
Do not place this apparatus on an unstable surface.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
Protect from Exposure to Moisture and Foreign Objects
Do not use this apparatus near water.
WARNING: Avoid electric shock and fire hazard! Do not expose this product to
liquids, rain, or moisture.
WARNING: Avoid electric shock and fire hazard! Unplug this product before cleaning.
Clean only with a dry cloth. Do not use a liquid cleaner or an aerosol cleaner. Do not
use a magnetic/static cleaning device (dust remover) to clean this product.
WARNING: Avoid electric shock and fire hazard! Never push objects through the
openings in this product. Foreign objects can cause electrical shorts that can result in
electric shock or fire.
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IMPORTANT SAFETY INSTRUCTIONS
Accessories Warning
WARNING: Avoid electric shock and fire hazard! Only use attachments/accessories
specified by your service provider or the manufacturer.
Service Warnings
WARNING: Avoid electric shock! Do not open the cover of this product. Opening or
removing the cover may expose you to dangerous voltages. If you open the cover, your
warranty will be void. This product contains no user-serviceable parts. Refer all
servicing to qualified service personnel.
Servicing is required when the apparatus has been damaged in any way, such as a power-supply cord
or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has
been exposed to rain or moisture, does not operate normally, or has been dropped.
Check Product Safety
Upon completion of any service or repairs to this product, the service technician must perform safety
checks to determine that this product is in proper operating condition.
Protect the Product When Moving It
Always disconnect the power source when moving the apparatus or connecting or disconnecting
cables.
WARNING: Avoid personal injury and damage to this product! Use only with the cart,
stand, tripod, bracket, or table specified by the manufacturer or sold with the
apparatus. When a cart is used, use caution when moving the cart / apparatus
combination to avoid injury from tip-over.
20070802 Modem Cable with Recharge Battery
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FCC Compliance
FCC Compliance
United States FCC Compliance
This device has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against such interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy. If not installed and used in accordance with the
instructions, it may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be determined by
turning the equipment OFF and ON, the user is encouraged to try to correct the interference
by one or more of the following measures:



Reorient or relocate the receiving antenna.

Consult the cable company or an experienced radio/television technician for help.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Any changes or modifications not expressly approved by Cisco Systems, Inc., could void the
user's authority to operate the equipment.
The information shown in the FCC Declaration of Conformity paragraph below is a
requirement of the FCC and is intended to supply you with information regarding the FCC
approval of this device. The phone numbers listed are for FCC-related questions only and not
intended for questions regarding the connection or operation for this device. Please contact your cable
service provider for any questions you may have regarding the operation or installation of this device.
Declaration of Conformity
This device complies with Part 15 of FCC
Rules. Operation is subject to the following two
conditions: 1) the device may not cause
harmful interference, and 2) the device must
accept any interference received, including
interference that may cause undesired
operation.
VoIP Cable Modem
Model: DPC2203C
Manufactured by:
Cisco Systems, Inc.
5030 Sugarloaf Parkway
Lawrenceville, Georgia 30044 USA
Telephone: 678-277-1120
Canada EMI Regulation
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la class B est conforme à la norme NMB-003 du Canada.
20060628 FCC Standard
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Contents
IMPORTANT SAFETY INSTRUCTIONS
v
FCC Compliance
xi
About This Guide
xv
Chapter 1 Introducing the Model DPC2203C VoIP Cable Modem 1
DPC2203C Features ................................................................................................................. 2
DPC2203C Components.......................................................................................................... 4
Theory of Operation ................................................................................................................ 7
Chapter 2 Installing the DPC2203C for Internet Service
13
Before You Begin .................................................................................................................... 14
Install the Cable Modem ....................................................................................................... 18
Configure TCP/IP.................................................................................................................. 20
Install USB Drivers ................................................................................................................ 23
Chapter 3 Installing the DPC2203C for Telephone Service
25
Telephone Requirements ...................................................................................................... 26
About the Battery ................................................................................................................... 27
Mount the Cable Modem on a Wall (Optional) ................................................................. 29
Install the Cable Modem to Provide Telephone Service .................................................. 31
Chapter 4 Troubleshooting the Installation
35
Troubleshooting Overview................................................................................................... 37
Functions of Front Panel LED Status Indicators................................................................ 38
Powering Options .................................................................................................................. 41
No Downstream Signal Lock ............................................................................................... 43
Ranging Not Complete ......................................................................................................... 45
IP Connectivity Not Complete ............................................................................................. 47
Registration Not Complete ................................................................................................... 49
Troubleshooting for High-Speed Data Installations ......................................................... 51
Troubleshooting for Telephony Installations..................................................................... 54
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Contents
Chapter 5 Operating the DPC2203C
57
WebWizard ............................................................................................................................. 58
Appendix A Specifications
67
Technical Specifications ........................................................................................................ 68
Appendix B Cable Modem Warranty and RMA Information
73
Warranty and RMA Information ......................................................................................... 74
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About This Guide
About This Guide
Introduction
This installation and operation guide applies to the Model DPC2203C voice over
Internet Protocol (VoIP) Cable Modems. These models are cable modems with an
embedded media terminal adapter (EMTA) including two RJ-11 telephone ports
supporting two-line voice services, a 10/100Base-T Ethernet port, and a USB 1.1 port
for high-speed data connectivity.
The DPC2203C is compatible with the following specifications:
 Data Over Cable System Interface Specifications (DOCSIS®) 2.0 and 1.1
 PacketCableTM 1.0 (upgradeable to PacketCable 1.1)
This guide provides the following design, performance, and technical information
for understanding basic VoIP and cable modem operation and function to
familiarize you with the DPC2203C:
 Design and performance features
 Theory of operation for cable modems
 Procedures for installing, operating, maintaining, and troubleshooting the
DPC2203C using the Cable Modem Access Protection and WebWizard features
 Appendixes that include technical specifications
Purpose
This installation and operation guide contains detailed instructions for installing,
operating, maintaining, and troubleshooting the DPC2203C.
Audience
This guide is written for cable service providers, system operators, cable modem
installers, system engineers, customer service representatives, cable modem
marketing personnel, and Cisco Service engineers.
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About This Guide
Document Version
This is the second release of this document.
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1 Chapter 1
Introducing the Model
DPC2203C VoIP Cable Modem
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 LithiumIon 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.
In This Chapter



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DPC2203C Features ................................................................................ 2
DPC2203C Components ........................................................................ 4
Theory of Operation ............................................................................... 7
1
Chapter 1 Introducing the Model DPC2203C VoIP Cable Modem
DPC2203C Features
This section contains an overview of some of the design and performance features of
the DPC2203C.
Design and Performance Features
The DPC2203C is designed to meet DOCSIS® 2.0 and 1.1 specifications along with
PacketCable 1.0 specifications.
The following list provides some of the outstanding design and performance
features of the DPC2203C:
 Attractive compact design
 Embedded Multimedia Terminal Adapter (EMTA) that provides two lines of
voice services
 Standard VoIP call signaling compliant with MGCP/NCS specifications
 Software upgrades available to support session initiation protocol (SIP) call
signaling
 G.711 and G.728 codecs (other codecs are available upon request)
 Echo cancellation
 Voice activation detection (VAD)
 Comfort noise generation (CNG)
 WebWizard browser-based graphical user interface for simple setup
 Up to eight front-panel LED status indicators provide an easy-to-understand
display that shows cable modem status and real-time data transmission activity
 Internet Protocol Security (IPSec) and AES-128 encryption options
 Downloadable software for future upgrades
 Bridged 10/100Base-T auto-sensing/auto-MDIX Ethernet port
 USB 1.1 data port
 CD-ROM containing a user guide and USB driver installation software
 Simple network management protocol (SNMP) v1, v2c, and v3
 Unit can be operated freestanding horizontally or vertically, or wall mounted
horizontally or vertically
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DPC2203C Features
WebWizard
The DPC2203C includes the WebWizard, a browser-based interface that facilitates
cable modem set up and troubleshooting. The WebWizard verifies set-up and
troubleshooting results and eliminates the need to load additional setup software on
the consumer premise equipment (CPE). In addition, as many as eight front-panel
LED status indicators provide an informative and easy-to-understand display that
indicates cable modem status along with a visual feedback of real-time data
transmissions and modem operating status.
Note: For more information on the WebWizard feature, see WebWizard (on page
58).
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Chapter 1 Introducing the Model DPC2203C VoIP Cable Modem
DPC2203C Components
Front Panel Description
The front panel of your cable modem provides status LEDs that indicate how well
and at what state your cable modem is operating. See Functions of Front Panel LED
Status Indicators (on page 38) for more information on front-panel LED status
indicator functions.
1
POWER – Illuminates solid green to indicate that AC power is being applied to
the cable modem. AC power must be available to recharge the optional battery.
2
DS (Downstream) – Indicates the status of the connection for receiving data.
Illuminates during normal operation
3
US (Upstream) – Indicates the status of the connection for sending data.
Illuminates during normal operation
4
ONLINE – Illuminates solid green when the cable modem is registered on the
network and fully operational. This indicator blinks to indicate one of the
following conditions:



4
The cable modem is booting up and not ready for data
The cable modem is scanning the network and attempting to register
The cable modem has lost registration on the network and will continue
blinking until it registers again
5
LINK – Illuminates solid green to indicate that an Ethernet/USB carrier is
present and blinks to indicate that Ethernet/USB data is being transferred
between the PC and the cable modem
6
TEL 1 – Illuminates solid green when telephony service is enabled. Blinks when
line 1 is in use
7
TEL 2 – Illuminates solid green when telephony service is enabled. Blinks when
line 2 is in use
8
BATTERY – Illuminates solid green to indicate that the battery is charged. Blinks
to indicate that the battery charge is low. Off when operating from battery
power, when the battery charge is depleted, or the battery is defective or not
installed
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DPC2203C Components
Notes:
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
After the cable modem is successfully registered on the network, the POWER
(LED 1), DS (LED 2), US (LED 3), and ONLINE (LED 4) LEDs illuminate
continuously to indicate that the cable mode is active and fully operational

LEDs may behave differently when the cable modem is running on battery
power (without AC power-optional model only). Most LEDs are disabled if
the unit is operating on battery power. In this mode, the POWER LED blinks
to indicate that the unit is operating under battery power but AC power has
failed
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Chapter 1 Introducing the Model DPC2203C VoIP Cable Modem
Back Panel Description
The following illustration shows the description and function of the back panel
components on the DPC2203C.
Important: Do not connect your PC to both the Ethernet and USB ports at the same
time. Your modem will not function properly if both the Ethernet and USB ports are
connected to your PC at the same time.
1
POWER – Connects the cable modem to the AC power supply that is provided
with your cable modem
CAUTION:
Avoid damage to your equipment. Only use the AC power adapter that is
provided with your cable modem.
2
TEL 1/TEL 2 – RJ-11 telephone ports connect to home telephone wiring to
conventional telephones or fax machines
3
ETHERNET – RJ-45 Ethernet port connects to the 10/100base-T Ethernet port on
your PC or your home network
4
USB – 12 Mbps USB 1.1 port connects to the USB port on your PC
5
REBOOT EMTA – Pressing this switch reboots the EMTA. Pressing this switch
for more than three seconds resets the device to factory default values and
reboots the EMTA
CAUTION:
The Reboot EMTA button is for maintenance purposes only. Do not use
unless instructed to do so by your service provider. Doing so may cause
you to lose any cable modem settings you have selected.
6
6
CABLE – F-Connector connects to an active signal from your service provider
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Theory of Operation
Theory of Operation
This section summarizes the theory of operation for cable modems and provides a
high-level overview of the operational stages for the cable modem. Reading this
chapter provides a better understanding of how cable modems operate.
Note: This section is not intended to be a specification for the cable modem.
Cable Modem Initialization
A cable modem must establish a communication link with the headend before it
becomes fully operational. This section describes the eight DOCSIS-required
operational stages through which a cable modem progresses in establishing this
communication link.
This section provides a detailed explanation of each of the following operational
stages.
1
Scan for Downstream Channel
2
Obtain Upstream Parameters
3
Adjust Timing Offset and Power Level
4
Establish IP Connectivity
5
Establish Time of Day
6
Transfer Operational Parameters
7
Register with the Cable Modem Termination System (CMTS)
8
Initialize Baseline Privacy
Scan for Downstream Channel
When a cable modem powers on, the cable modem starts to scan the network for the
CMTS downstream channel. The downstream channel is the channel used to send
data from the CMTS to the cable modem. The cable modem identifies a valid
downstream data channel as a channel that has QAM signal timing, forward error
correction (FEC) framing, MPEG packets, and downstream media access control
(MAC) messages. The CMTS terminates the cable modem signal at an upstream
location and provides the cable modem with a network connection.
This section discusses the cable modem downstream scanning routine along with
two features that speed up the downstream scanning process: the Valid CMTS
Frequency Table and the WebWizard Gscan function.
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Chapter 1 Introducing the Model DPC2203C VoIP Cable Modem
Downstream Scanning Routine
The cable modem starts its own standard scanning algorithm. The scanning routine
of the cable modem is now optimized to seek out the CMTS downstream channel as
quickly as possible. The actual scanning process varies slightly depending on the
television frequency channel plan for your particular country.
For example, in North America the standard downstream scanning routine works in
three phases and may take several minutes. The cable modem stops scanning when
the cable modem finds a valid downstream data channel. The cable modem then
proceeds to the next stage: obtain upstream parameters.
In this example, the cable modem scans for the downstream channel in the following
three phases.
1
The cable modem starts to scan the network at 453 MHz and scans up in 6 MHz
increments to end at 855 MHz.
2
The cable modem starts scanning the network at 447 MHz and then scans in 6
MHz increments down to 93 MHz.
3
The process is then repeated for the National Television Systems Committee
(NTSC) Harmonic Related Carrier (HRC) frequency plan in 6.0003 MHz
increments.
Important: There are specialized frequency plans to optimize the acquisition of the
downstream signal that depend on the video format used in the country of
deployment. Check with the representative who handles your account for more
information about alternate scanning routines outside of North America.
Improved Downstream Scanning Features
The cable modems contain two outstanding features that can speed up the scanning
process: the Valid CMTS Frequency Table and the WebWizard Gscan function.
Valid CMTS Frequency Table
The Valid CMTS Frequency Table feature works automatically and requires no user
intervention. When a cable modem finds a valid downstream data channel so that it
can complete the ranging stage, the cable modem stores this frequency in nonvolatile
memory (NVM). The cable modem checks the frequencies stored in NVM before
starting the standard scanning algorithm to search for a downstream data channel.
Note: The cable modems store up to 10 valid CMTS frequencies in the table.
The standard scanning algorithm also regularly interrupts progressive scanning to
check the last known valid CMTS frequency, and then the cable modem resumes its
standard scanning algorithm where it left off.
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Theory of Operation
WebWizard Gscan Function
When installing a cable modem, you can speed up the process by using the
WebWizard Gscan function. To access the WebWizard Gscan function, you must
first connect a PC to the cable modem. Then, using your Web Browser, you can
access the WebWizard Gscan function.
Note: For more information on the WebWizard Gscan function, see WebWizard (on
page 58).
Obtain Upstream Parameters
After finding a valid downstream data channel, the cable modem reviews the
upstream parameters needed to perform the next stage: ranging and automatic
adjustments. The upstream parameters enable the cable modem to send data to the
CMTS. When the cable modem finds the correct upstream parameters, the cable
modem proceeds to the ranging and automatic adjustments stage.
If the cable modem cannot find valid upstream parameters, it returns to the scan for
downstream channel stage. Then the cable modem starts to scan again at the next
available channel.
Adjust Timing Offset and Power Level
After the cable modem obtains its upstream parameters, it begins the ranging and
automatic adjustments stage. In this stage, the cable modem adjusts the timing offset
and the power level for communicating with the CMTS.
The cable modem uses MAC messages to determine the upstream channel frequency
and adjusts timing offsets to verify the synchronized timing between the CMTS and
the cable modem. This process also determines the upstream signal transmit power
level from the cable modem to communicate with the CMTS.
After the cable modem completes the ranging stage and registers with the CMTS, it
repeats this routine regularly to fine-tune the settings established in the previous
stages. These regular adjustments are considered routine maintenance and do not
affect normal operations of your cable modem service.
Note: If the cable modem fails to achieve the proper settings when performing
ranging and automatic adjustments, it terminates the session and restarts the
initialization process at the scan for downstream channel stage.
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Chapter 1 Introducing the Model DPC2203C VoIP Cable Modem
Establish IP Connectivity
After completing the ranging and automatic adjustments stage, the cable modem
attempts to establish Internet Protocol (IP) connectivity. In this stage, the cable
modem obtains network connection information and a cable modem IP address from
provisioning servers that are located on the network side of the CMTS interface.
The cable modem achieves this connectivity using a protocol called Dynamic Host
Configuration Protocol (DHCP).
Note: If the cable modem fails to establish IP connectivity, it terminates the session
and restarts the initialization process at the scan for downstream channel stage.
Establish Time of Day
After the cable modem establishes IP connectivity, the cable modem requests the
time of day from the network interface. This stage allows the cable modem to know
the system time so that when the cable modem logs an event, it associates a time
with that event.
Note: The cable modem can operate without establishing the time of day; however, it
logs the failure, generates an alert to simple network management protocol (SNMP),
and then proceeds to the next stage. The cable modem periodically repeats this stage
to attempt to establish the time of day.
Transfer Operational Parameters
After the cable modem requests the time of day, the cable modem then requests the
transfer of the cable modem configuration file. The cable modem makes the request
to the Trivial File Transfer Protocol (TFTP) server. The configuration file contains
parameters for how the system operator wants the cable modem to function on the
cable network.
Typical operation parameters for the cable modem include:
 Upstream and downstream rate limits
 Specific frequencies
 Number of CPE devices
 IP filters
 Port filters
 MAC/LLC filters
 Vendor-specific settings
 Software version installed
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Theory of Operation
Notes:
 If the cable modem does not contain the software version requested by the
configuration file, the cable modem requests that software version from the TFTP
server. When the software installation is complete, the cable modem restarts the
entire initialization process again at the scan for downstream channel stage.
 If the system instructs the cable modem to use a different frequency from what
the cable modem is currently using, the cable modem cannot proceed to the next
stage: register with the CMTS. The cable modem must repeat the scan for
downstream channel stage or reestablish ranging on a new upstream channel.
Register with the CMTS
After the cable modem completes the transfer operational parameters stage, the
cable modem now registers with the CMTS. After the cable modem receives a reply
from the CMTS confirming its registration request, the cable modem is now
authorized to forward network traffic from the CPE.
Initialize Baseline Privacy
Baseline Privacy functions in the CMTS and in the cable modem are used to encrypt
data being transferred to and from the cable modem. Following registration with the
CMTS, if the cable modem is provisioned to run with baseline privacy, the cable
modem must initialize baseline privacy operations. Using baseline privacy means
that all data transferred is secure.
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2 Chapter 2
Installing the DPC2203C for
Internet Service
Introduction
This chapter provides information and procedures to assist you in
placing, installing, configuring, operating, and troubleshooting the
DPC2203C for high-speed Internet service.
In This Chapter




72-4017315-01 Rev B
Before You Begin................................................................................... 14
Install the Cable Modem ...................................................................... 18
Configure TCP/IP ................................................................................ 20
Install USB Drivers ............................................................................... 23
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Chapter 2 Installing the DPC2203C for Internet Service
Before You Begin
This section provides the minimum requirements for installing the DPC2203C on
your system and at user sites.
Cable System Requirements
To allow successful installation and operation, verify that your system meets the
following minimum requirements:
 DOCSIS 2.0 or 1.1
 PacketCable 1.0
Important: This guide does not cover installing cable modem network and headend
equipment on your system. For information on installing network and headend
equipment, refer to the documentation provided with your network and headend
equipment.
Equipment Checklist
Before you install the cable modem, check the items in the carton. The carton
contains the following items, except as noted:
 One cable modem (DPC2203C)
 One Ethernet cable (CAT5/RJ-45)
 One USB cable
 One power adapter with power cord
 One CD-ROM containing the user guide and the USB drivers
 One or two lithium-ion cartridge batteries (optional models only)
Notes:
 An additional cable signal splitter and coaxial cable are needed to connect to a
VCR, a digital set-top converter, or a TV to the same cable connection as your
cable modem.
 Cables and other equipment needed for telephony service must be purchased
separately.
14
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Before You Begin
Hardware and Software Requirements
This section provides hardware and software requirements for connecting your
cable modem to a PC for high-speed Internet service.
Note: You will also need an active cable input line and an Internet connection.
PC Requirements
 A PC with a Pentium MMX 133 processor or greater
 32 MB of RAM
 Netscape or Internet Explorer
 CD-ROM drive
Macintosh Requirements
 MAC OS 7.5 or later
 32 MB of RAM
Ethernet Requirements
 A PC with Microsoft Windows 95 operating system (or later) with TCP/IP
protocol installed, or an Apple Macintosh computer with TCP/IP protocol
installed
 An active 10/100Base-T Ethernet network interface card (NIC) installed in your
PC
USB Requirements
 A PC with a Microsoft Windows 2000, Windows XP, or Windows Vista
operating system
 A host USB port installed in your PC
Telephony Requirements
 RJ-11 telephone jacks to connect to home telephone wiring to conventional
telephones or fax machines
Contacting Your Local Service Provider
Before you can use your cable modem, you need to have a high-speed Internet
access account. If you do not have a high-speed Internet access account, you need to
set up an account with your local service provider. Choose one of the two options in
this section.
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15
Chapter 2 Installing the DPC2203C for Internet Service
I Do Not Have a High-Speed Internet Access Account
If you do not have a high-speed Internet access account, your service provider will
set up your account and become your Internet Service Provider (ISP). Internet access
enables you to send and receive e-mail, access the World Wide Web, and receive
other Internet services.
You will need to give your service provider the following information:
 The serial number of the modem
 The Media Access Control (MAC) address of the modem
These numbers appear on a bar code label located on the cable modem. The serial
number consists of a series of alphanumeric characters preceded by S/N. The MAC
address consists of a series of alphanumeric characters preceded by . The following
illustration shows a sample bar code label.
Note: Due to minor design changes, the label on your cable modem may differ
slightly from the one shown here.
Write down these numbers in the space provided here.
Serial Number _______________________
MAC Address _______________________
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Before You Begin
I Already Have an Existing High-Speed Internet Access Account
If you have an existing high-speed Internet access account, you must give your
service provider the serial number and the MAC address of the cable modem. Refer
to the serial number and MAC address information listed previously in this section.
Note: You may not be able to continue to use your existing e-mail account with your
cable modem. Contact your service provider for more information.
The ideal location for your cable modem is where it has access to outlets and other
devices. Think about the layout of your home or office, and consult with your
service provider to select the best location for your cable modem. Read this user
guide thoroughly before you decide where to place your cable modem.
Consider these recommendations:
 Position your PC and cable modem so that they are located near an AC power
outlet.
 Position your PC and cable modem so that they are located near an existing cable
input connection to eliminate the need for an additional cable outlet. There
should be plenty of room to guide the cables away from the modem and the PC
without straining or crimping them.
 Airflow around the cable modem should not be restricted.
 Choose a location that protects the cable modem from accidental disturbance or
harm.
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17
Chapter 2 Installing the DPC2203C for Internet Service
Install the Cable Modem
Installation Diagram
The following diagram illustrates one of the various installation and connection
options that are available to you.
Note: Professional installation may be available. Contact your local service provider
for further assistance.
Installing the Modem
The following installation procedure ensures proper cable modem setup and
configuration.
WARNING:
To avoid personal injury or damage to your equipment, follow these steps in
the exact order shown.
1
Choose an appropriate and safe location to install the cable modem (close to a
power source, an active cable connection, your PC [if using high-speed Internet]
and your telephone lines [if using VoIP]).
Note: The cable modem can be positioned freestanding horizontally or vertically,
or it can be wall-mounted horizontally or vertically.
2
Power off your PC and unplug it from the power source.
WARNING:
Avoid electric shock! Failure to unplug your PC from the power source may
create a shock hazard.
18
72-4017315-01 Rev B
Install the Cable Modem
3
Connect your PC to either the Ethernet port or the USB port using the appropriate
data cable.
Note: You can connect two separate PCs to the cable modem at the same time by
connecting one to the Ethernet port and one to the USB port.
4
Insert the AC power cord into the power connector on the back of the cable
modem, and then plug the other end into an AC power source.
5
Plug in and power on your PC.
WARNING:
To avoid electric shock, disconnect your telephone company service at the
network interface device (demarcation point) before connecting the cable
modem telephone ports to your home telephone jacks.
6
Connect telephone port TEL1 (or Line 1 depending on your model) to your home
telephone jack. If your home is wired for a second telephone circuit, the connect
TEL2 (or Line 2 depending on your model) to the second telephone circuit.
7
Connect the active RF coaxial cable to the CABLE connector.
Note: Use an optional cable signal splitter to add a TV, a DHCT or set-top
converter, or a VCR.
8
The cable modem will then begin an automatic search to locate and sign on to the
broadband data network.
Note: This process may take up to 5 minutes. The modem will be ready for use
when the ONLINE LED status indicator on the front panel stops blinking and
illuminates continuously.
9
72-4017315-01 Rev B
Choose one of the following options:

To configure the TCP/IP protocol for Ethernet, go to Configure TCP/IP (on
page 20).

To install the USB Drivers for USB, go to Install USB Drivers (on page 23).
19
Chapter 2 Installing the DPC2203C for Internet Service
Configure TCP/IP
This section contains instructions for configuring the cable modem to run in
Microsoft Windows or Macintosh environments. In addition, TCP/IP protocol in a
Microsoft Windows environment is different for the Windows 95, 98, 98SE, ME,
2000, or XP versions. Go to the appropriate section and follow the instructions to
configure the TCP/IP protocol.
Configuring TCP/IP on Windows XP Systems
1
Click Start, and depending on your Start menu setup, choose one of the
following options:

If you are using the Windows XP Default Start Menu, select Connect to,
choose Show all connections, and then go to step 2.

If you are using the Windows XP Classic Start Menu, select Settings, choose
Network Connections, click Local Area Connection, and then go to step 3.
2
Double-click the Local Area Connection icon in the LAN or High-Speed Internet
section of the Network Connections window.
3
Click Properties in the Local Area Connection Status window.
4
Click Internet Protocol (TCP/IP), and then click Properties in the Local Area
Connection Properties window.
5
Select both Obtain an IP address automatically and Obtain DNS server address
automatically in the Internet Protocol (TCP/IP) Properties window, and then
click OK.
6
Click Yes to restart your computer when the Local Network window opens. The
computer restarts. The TCP/IP protocol is now configured on your PC, and your
Ethernet devices are ready for use.
7
Try to access the Internet. If you cannot access the Internet, go to
Troubleshooting the Installation (on page 35). If you still cannot access the
Internet, contact your service provider for further assistance.
Configuring TCP/IP on Windows 2000 Systems
20
1
Click Start, select Settings, and choose Network and Dial-up Connections.
2
Double-click the Local Area Connection icon in the Network and Dial-up
Connections window.
3
Click Properties in the Local Area Connection Status window.
4
Click Internet Protocol (TCP/IP) in the Local Area Connection Properties
window, and then click Properties.
5
Select both Obtain an IP address automatically and Obtain DNS server address
automatically in the Internet Protocol (TCP/IP) Properties window, and then
click OK.
72-4017315-01 Rev B
Configure TCP/IP
6
Click Yes to restart your computer when the Local Network window opens. The
computer restarts. The TCP/IP protocol is now configured on your PC, and your
Ethernet devices are ready for use.
7
Try to access the Internet. If you cannot access the Internet, go to
Troubleshooting the Installation (on page 35). If you still cannot access the
Internet, contact your service provider for further assistance.
Configuring TCP/IP on Windows 95, 98, 98SE, or ME Systems
1
Click Start, select Settings, and choose Control Panel.
2
Double-click the Network icon in the Control Panel window.
3
Read the list of installed network components under the Configuration tab to
verify that your PC contains the TCP/IP protocol/Ethernet adapter.
4
Is TCP/IP protocol listed in the installed network components list?


If yes, go to step 7.
If no, click Add, click Protocol, click Add, and then go to step 5.
5
Click Microsoft in the Manufacturers list.
6
Click TCP/IP in the Network Protocols list, and then click OK.
7
Click the TCP/IP Ethernet Adapter protocol, and then choose Properties.
8
Click the IP Address tab, and then select Obtain an IP address automatically.
9
Click the Gateway tab and verify that these fields are empty. If they are not
empty, highlight and delete all information from the fields.
10 Click the DNS Configuration tab, and then select Disable DNS.
11 Click OK.
12 Click OK when the system finishes copying the files, and then close all
networking windows.
13 Click YES to restart your computer when the System Settings Change dialog box
opens. The computer restarts. The TCP/IP protocol is now configured on your
PC, and your Ethernet devices are ready for use.
14 Try to access the Internet. If you cannot access the Internet, go to
Troubleshooting the Installation (on page 35). If you still cannot access the
Internet, contact your service provider for further assistance.
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21
Chapter 2 Installing the DPC2203C for Internet Service
Configuring TCP/IP on Macintosh Systems
1
Click the Apple icon in the upper-left corner of the Finder. Scroll down to
Control Panels, and then click TCP/IP.
2
Click Edit on the Finder at the top of the screen. Scroll down to the bottom of the
menu, and then click User Mode.
3
Click Advanced in the User Mode window, and then click OK.
4
Click the Up/Down selector arrows located to the right of the Connect Via
section of the TCP/IP window, and then click Using DHCP Server.
5
Click Options in the TCP/IP window, and then click Active in the TCP/IP
Options window.
Note: Make sure that the Load only when needed option is unchecked.
22
6
Verify that the Use 802.3 option located in the upper-right corner of the TCP/IP
window is unchecked. If there is a check mark in the option, uncheck the option,
and then click Info in the lower-left corner.
7
Is there a Hardware Address listed in this window?

If yes, click OK. To close the TCP/IP Control Panel window, click File, and
then scroll down to click Close. You have completed this procedure.

If no, you must power off your Macintosh.
8
With the power off, simultaneously press and hold down the Command
(Apple), Option, P, and R keys on your keyboard. Keeping those keys pressed
down, power on your Macintosh but do not release these keys until you hear the
Apple chime at least three times, then release the keys and let the computer
restart.
9
When your computer fully reboots, repeat steps 1 through 7 to verify that all
TCP/IP settings are correct. If your computer still does not have a Hardware
Address, contact your authorized Apple dealer or Apple technical support center
for further assistance.
72-4017315-01 Rev B
Install USB Drivers
Install USB Drivers
This section contains instructions for installing the cable modem USB drivers if your
PC is equipped with a USB interface and a Microsoft Windows 2000 or Windows XP
operating system. The USB driver installation procedures are different for each
operating system. Follow the appropriate instructions in this section for your
operating system.
Note: If your PC does not have a USB interface, you may skip this section.
Installing USB Drivers on Windows XP Systems
1
Insert the USB Cable Modem Driver Installation Disk into the CD-ROM drive
of your PC.
2
Wait until the POWER and ONLINE LED status indicators on the front panel of
the cable modem illuminate solid green.
3
Select Install from a list or specific location (Advanced) in the Found New
Hardware Wizard window, and then click Next.
4
Select Search removable media (floppy, CD-ROM) in the Found New
Hardware Wizard window, and then click Next.
5
Click Continue Anyway in the Hardware Installation window to continue the
installation. The Found New Hardware Wizard window reopens with a message
that the installation has finished.
6
Click Finish to close the Found New Hardware Wizard window. The USB
drivers are installed on your PC, and your USB devices are ready for use.
7
Try to access the Internet. If you cannot access the Internet, go to
Troubleshooting the Installation (on page 35). If you still cannot access the
Internet, contact your service provider for further assistance.
Installing USB Drivers on Windows 2000 Systems
1
Insert the USB Cable Modem Driver Installation Disk into the CD-ROM drive
of your PC.
2
Wait until the POWER and ONLINE LED status indicators on the front panel of
the cable modem illuminate solid green.
3
Click Next in the Found New Hardware Wizard window.
4
Select Search for a suitable driver for my device (recommended) in the Found
New Hardware Wizard window, and then click Next.
5
Select CD-ROM drives in the Found New Hardware Wizard window, and then
click Next.
6
Click Next in the Found New Hardware Wizard window. The system searches
for the driver file for your hardware device.
72-4017315-01 Rev B
23
Chapter 2 Installing the DPC2203C for Internet Service
7
After the system finds the USB driver, the Digital Signature Not Found window
opens and displays a confirmation message to continue the installation.
8
Click Yes to continue the installation. The Found New Hardware Wizard
window reopens with a message that the installation is complete.
9
Click Finish to close the Found New Hardware Wizard window. The USB
drivers are installed on your PC, and your USB devices are ready for use.
10 Try to access the Internet. If you cannot access the Internet, go to
Troubleshooting the Installation (on page 35). If you still cannot access the
Internet, contact your service provider for further assistance.
Installing USB Drivers on Windows 98SE and Windows ME Systems
24
1
Insert the USB Cable Modem Driver Installation Disk into the CD-ROM drive
of your PC.
2
Wait until the POWER and ONLINE LED status indicators on the front panel of
the cable modem illuminate solid green. The Add New Hardware Wizard
window opens.
3
Click Next in the Add New Hardware Wizard window.
4
Select Search for the best driver for your device (Recommended) in the Add
New Hardware Wizard window, and then click Next.
5
Select CD-ROM drive in the Add New Hardware Wizard window, and then
click Next.
6
Select The updated driver (Recommended) in the Add New Hardware Wizard
window, and then click Next.
7
Click Next in the Add New Hardware Wizard window. The Copying Files
window opens. After 10 to 20 seconds have passed, the Add New Hardware
Wizard window reopens.
8
Click Finish. The USB driver installation is complete.
72-4017315-01 Rev B
3 Chapter 3
Installing the DPC2203C for
Telephone Service
Introduction
This chapter provides procedures to assist you in placing, installing,
configuring, operating, and troubleshooting the DPC2203C for
telephone service.
In This Chapter




72-4017315-01 Rev B
Telephone Requirements ..................................................................... 26
About the Battery .................................................................................. 27
Mount the Cable Modem on a Wall (Optional) ................................ 29
Install the Cable Modem to Provide Telephone Service ................. 31
25
Chapter 3 Installing the DPC2203C for Telephone Service
Telephone Requirements
This section provides hardware and software requirements for utilizing your cable
modem for telephone service.
Number of Telephone Devices
The RJ-11 telephone-style connectors on the cable modem can each provide
telephone service to multiple telephones, fax machines, and analog modems.
The maximum number of telephone devices connected to each RJ-11 port is limited
by the total Ringing Load of the telephone devices that are connected. Many
telephone devices are marked with a Ringer Equivalent Number (REN). Each
telephone port on the cable modem can support up to a 5 REN load.
The sum of the REN load on all of the telephone devices attached to each port must
not exceed 5 REN.
Telephone Device Types
You can use telephone devices that are not labeled with a REN number, but the
maximum number of attached telephone devices cannot be accurately calculated.
With telephone devices that are not labeled, each device should be connected and
the ring signal should be tested before adding more devices. If too many telephone
devices are attached and the ring signal can no longer be heard, telephone devices
should be removed until the ring signal works properly.
Telephones, fax machines, and other telephone devices should use the center 2 pins
of the RJ-11 connectors to connect to the cable modem telephone ports. Some
telephones use other pins on the RJ-11 connectors and require adapters in order to
work.
Dialing Requirements
All your telephones should be set to use DTMF dialing. Pulse dialing is typically not
enabled by your local provider.
Telephone Wiring Requirements
The cable modem supports interior telephone wiring. The maximum distance from
the unit to the most distant telephone device must not exceed 1000 feet (300 meters).
Use 26-gauge twisted-pair, or larger, telephone wiring.
Important: Connection to an existing or a new permanently installed home
telephone wiring network must be done by a qualified installer.
26
72-4017315-01 Rev B
About the Battery
About the Battery
Your modem includes a rechargeable Lithium-Ion battery to provide stand-by
operation in the event of an AC power failure. You can replace the battery without
the use of any tools.
WARNING:
There is danger of explosion if the battery is mishandled or incorrectly
replaced. Replace only with the same type of battery. Do not disassemble it or
attempt to recharge the battery outside the system. Do not crush, puncture,
dispose of in a fire, short external contacts, or expose to water or other liquids.
Dispose of the battery in accordance with local regulations and instructions
from your service provider.
Charging the Batteries
The battery begins to charge automatically as soon as you attach the modem to the
AC electrical outlet. When you first plug in the modem, the POWER LED status
indicator illuminates.
Important: It may take as long as 24 hours for the battery to charge fully.
Using the Modem Without a Battery
If you want, you can use the modem without a battery. If you need to remove the
battery, follow the procedures found in Removing and Replacing the Batteries.
Important: If you choose to operate your modem without a battery, you risk losing
your telephone service during a power outage.
Replacing the Batteries
Under normal circumstances, the battery should last for several years. The
BATTERY LED status indicator turns off to indicate that the battery should be
replaced soon. Contact your service provider to obtain replacement batteries and for
disposal instructions.
Note: Follow the steps found in Removing and Replacing the Battery (on page 28) to
remove and replace the battery.
72-4017315-01 Rev B
27
Chapter 3 Installing the DPC2203C for Telephone Service
Location of Battery
The following illustration shows the location of the battery on the DPC2203C.
Removing and Replacing the Battery
Follow these steps to remove and replace the battery. You can remove and replace
the battery without disconnecting the AC power source.
1
Carefully turn the modem over.
2
Gently release the latch to open the battery cover and gain access to the battery
compartment.
3
Grasp the plastic strip on the front of the battery and gently slide the battery
forward to remove it from the battery compartment.
4
Insert a new battery into the battery compartment.
5
Close the battery compartment door. The battery lock will automatically reengage.
Important! It can take as long as 24 hours for the battery to charge fully.
Note: Dispose of the battery in accordance with local regulations and
instructions from your service provider.
28
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Mount the Cable Modem on a Wall (Optional)
Mount the Cable Modem on a Wall (Optional)
Before You Begin
Before you begin, choose an appropriate mounting place. The wall can be made of
cement, wood, or drywall. The mounting location should be free of obstructions on
all sides, and the cables should be able to easily reach the cable modem without
strain. Leave sufficient clearance between the bottom of the cable modem, and any
flooring or shelving underneath, to allow access to cabling. In addition, leave
enough slack in all cables so that the cable modem can be removed for any required
maintenance without disconnecting the cables. Also, verify that you have the
following items:
 Two wall anchors for #8 x 1-inch screws
 Two #8 x 1-inch pan head sheet metal screws
 Drill with a 3/16-in. wood or masonry bit
 A copy of the wall-mounting illustrations shown on the following pages
Mounting Instructions
You can mount the cable modem directly on a wall using two wall anchors, two
screws, and the mounting slots on the bottom of the modem. The modem can be
mounted vertically or horizontally.
72-4017315-01 Rev B
29
Chapter 3 Installing the DPC2203C for Telephone Service
Location and Dimensions of the Wall-Mounting Slots
The following illustration shows the location and dimensions of the wall-mounting
slots on the bottom of the modem. Use the information on this page as a guide for
mounting your modem to the wall.
Wall Mounting Instructions
Complete these steps to mount the modem to the wall.
1
Using a drill with a 3/16-in bit, drill two holes at the same height and 4 inches
apart.
2
Are you mounting the cable modem into a drywall or concrete surface where a
wooden stud is not available?


If yes, drive the anchor bolts into the wall and then go to step 3.
If no, go to step 3.
3
Install the mounting screws into the wall or the anchor bolts, as appropriate, and
leave a gap of about 1/4-in. between the screw head and the wall.
4
Verify that no cables or wires are connected to the cable modem.
5
Lift the cable modem into position. Slip the large end of both mounting slots
(located on the back of the modem) over the mounting screws, and then slide the
modem down until the narrow end of the keyhole slot contacts the shaft of the
screw.
Important: Verify that the mounting screws securely support the modem before
you release the unit.
30
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Install the Cable Modem to Provide Telephone Service
Install the Cable Modem to Provide Telephone
Service
The cable modem can be used to provide telephone service for one or two telephone
lines. This section describes how to connect a single telephone, fax machine, analog
telephone modem, or other telephone device to each telephone port on the cable
modem.
Important: Connecting the cable modem permanently to the installed home
telephone wiring is not covered by this document.
Installing the Modem to Provide Telephone Service
Heed the following warnings, and then follow the subsequent installation
procedures in this section to ensure proper cable modem installation and
configuration for providing telephone service.
WARNING:

To avoid personal injury, follow the installation instructions in the exact
order shown.

Telephone connections to an installed home telephone wiring network
must be done by a qualified installer. The cable telephone service
provider may offer professional installation and connection to the home
telephone wiring network. A fee may be charged for this service.

Hazardous electrical voltages can exist on the telephone ports on the cable
modem and can be present on any connected wiring. Telephone wiring
and connections must be properly insulated to prevent electrical shock.
Disconnect power from the cable modem before attempting to connect to
any device.

To prevent possible damage to equipment, disconnect any other telephone
service before connecting your cable modem to the same wires.
Note: Professional installation may be available. Contact your service provider for
further assistance.
72-4017315-01 Rev B
31
Chapter 3 Installing the DPC2203C for Telephone Service
Installation Diagram
The following diagram illustrates one of the various connection options that are
available to you.
To install the cable modem for telephone service
1 Connect a telephone, fax machine, or analog modem to each of the appropriate
RJ-11 ports on the cable modem.
Notes:
2
32

The cable modem provides one line of telephone service on each of the RJ-11
connectors.


Service must be set up and enabled by the telephone service provider.

The telephone port labeled Line 1 also supports multi-line telephone devices.
Line 1 is supported on pins 3 and 4, and Line 2 is supported on pins 2 and 5.

The use of telephones that require electrical connections to other RJ-11 pins
requires an adapter.
The two center conductors (pins 3 and 4) on the RJ-11 connector provide
electrical connections to directly attached telephone devices or to a
permanently installed in-home telephone wiring network.
After all telephone connections are complete, insert the AC power cord into the
power connector on the back of the cable modem, and then plug the cord into an
AC power source.
72-4017315-01 Rev B
Install the Cable Modem to Provide Telephone Service
3
Connect the active RF coaxial cable to the CABLE connector on the back of the
cable modem. The cable modem begins an automatic search to locate and sign on
to the network that provides the telephone service. This process may take up to 5
minutes. The modem will be ready for use when the ONLINE LED status
indicator on the front panel stops blinking and illuminates continuously
Note: Use an optional cable signal splitter to add a TV, a DHCT or set-top
converter, or a VCR.
4
Test your telephone service by lifting the receiver of each attached telephone to
verify that the dial tone can be heard and that you can make and receive
telephone calls. This process may take several minutes.
Notes:
72-4017315-01 Rev B

The TEL 1 and TEL 2 LED status indicators on the front panel of the cable
modem illuminate when telephony service is enabled.

The TEL 1 or the TEL 2 LED status indicators on the front panel of the cable
modem blink when the attached device is “off the hook.”
33
4 Chapter 4
Troubleshooting the
Installation
Introduction
This chapter provides descriptions of possible cable modem
performance and installation issues that may occur after the cable
modem is installed. This chapter also shows specific examples of the
condition as shown by the LED status indicators on the front panel of
the cable modem. These indicators provide visual feedback so you can
troubleshoot the situation quickly.
Audience
This chapter contains detailed troubleshooting instructions for
Customer Support Representatives (CSRs), cable modem installers,
and network support engineers.
Important: For all of the scenarios listed in this chapter, you will have
full access to the WebWizard from the CPE until the cable modem is
registered on the network. The vendor-specific MIB for controlling
access to the WebWizard does not take effect until after the cable
modem registers with the CMTS.
In This Chapter









72-4017315-01 Rev B
Troubleshooting Overview ................................................................. 37
Functions of Front Panel LED Status Indicators .............................. 38
Powering Options ................................................................................. 41
No Downstream Signal Lock .............................................................. 43
Ranging Not Complete ........................................................................ 45
IP Connectivity Not Complete ............................................................ 47
Registration Not Complete .................................................................. 49
Troubleshooting for High-Speed Data Installations ........................ 51
Troubleshooting for Telephony Installations ................................... 54
35
Chapter 4 Troubleshooting the Installation
36
72-4017315-01 Rev B
Troubleshooting Overview
Troubleshooting Overview
This section provides a table that illustrates a summary of the visual status of the
front-panel LED status indicators for the various cable modem situations and
conditions described in this chapter.
Summary of Front Panel LED Status Indicators (AC Power applied)
The following table provides a summary of the visual status of the front panel LED
status indicators for the various cable modem situations and conditions described in
this chapter when AC power is applied to the cable modem. Use this table as a quick
reference for troubleshooting your cable modem.
Note: Detailed troubleshooting procedures for each of the conditions described in
this table follow next in this chapter.
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Chapter 4 Troubleshooting the Installation
Functions of Front Panel LED Status Indicators
Initial Power Up, Calibration, and Registration (AC Power applied)
The following chart illustrates the sequence of steps and the corresponding
appearance of the cable modem front panel LED status indicators during power up,
calibration, and registration on the network when AC power is applied to the cable
modem. Use this chart to troubleshoot the power up, calibration, and registration
process of your cable modem.
Note: After the cable modem completes step 10 (Registering with Call Agent), the
modem proceeds immediately to Normal Operations (AC Power applied) (on page
39).
38
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Functions of Front Panel LED Status Indicators
Normal Operations (AC Power applied)
The following chart illustrates the appearance of the cable modem front panel LED
status indicators during normal operations when AC power is applied to the cable
modem.
Front Panel LED
Normal Operations
1
POWER
On
2
DS
On
3
US
On
4
ONLINE
On
5
Link

On - When a single device is connected to either the Ethernet or the USB
port and no data is being sent to or from the modem.

Blinks - When only one Ethernet or USB device is connected and data is
being transferred between the consumer premise equipment (CPE) and
the cable modem.

Off - When no devices are connected to either the Ethernet or the USB
ports.
1
Note: With both Ethernet and USB devices connected to the modem at the
same time, when data is transferred through only one of the devices
(Ethernet or USB), the LED illuminates continuously. Whenever data is sent
through both data ports (Ethernet and USB), the LED blinks as described
above.
6
7
8
TEL 1
TEL 2
BATTERY2







On - When telephony service is enabled
Blinks - When Line 1 is in use
On - When telephony service is enabled
Blinks - When Line 2 is in use
On - When battery is charged
Blinks - When battery charge is low
Off - When battery needs to be replaced (if observed
The LINK LED is on whenever a PC is connected to the modem, and it blinks to indicate that
data is being transferred. If the modem provides telephone service only and is not connected to a
PC, the LINK LED is OFF.
1
The BATTERY LED becomes active once the modem registers with the call agent. When the
modem registers with the call agent, the visual status described in the table applies.
2
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Chapter 4 Troubleshooting the Installation
Special Conditions
The following chart describes the appearance of the cable modem front panel LED
status indicators during special conditions to show when you have been denied
network access, when the modem is operating on battery power, or when a software
download is in progress.
40
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Powering Options
Powering Options
Description
The cable modem can operate from standard AC power or from battery power when
there is a loss of AC power. After a cable modem powers on, it performs an internal
self test to ensure proper initialization of the cable modem. When the self-test is
complete, the cable modem will begin normal operation if AC power is available. If
the cable modem is operating from battery power, it will begin operation in Power
Saving Mode or in Normal Operating mode depending on how the cable modem has
been configured by the service provider. AC power must be available in order to
charge the battery.
The following table illustrates the status of the front panel LED status indicators
when the no power condition exists.
LED
Label
Status
1
POWER
OFF
(Blinks if on battery power)
2
DS
OFF
3
US
OFF
4
ONLINE
OFF
5
LINK
OFF
6
TEL 1
OFF
(ON if on battery power. Only one phone line is available when operating
on battery power
7
TEL 2
OFF
8
BATTERY
 ON WHEN BATTERY IS CHARGED
 BLINKING WHEN BATTERY CHARGE IS LOW
 OFF WHEN BATTERY NEEDS TO BE REPLACED (IF OBSERVED
WITH AC POWER APPLIED TO THE MODEM)
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Chapter 4 Troubleshooting the Installation
Check and Correct
42
1
Verify correct connection of the power cord to the cable modem.
2
Verify correct connection of the power cord to an AC electrical outlet.
3
If a wall switch controls the AC electrical outlet, verify that the wall switch is in
the ON position.
4
Verify that the AC electrical outlet is working properly.
5
Replace the power cord.
6
Replace the cable modem.
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No Downstream Signal Lock
No Downstream Signal Lock
After a cable modem powers on and performs an internal self-test, the cable modem
starts to scan for the CMTS downstream channel. The cable modem start its standard
scanning algorithm.
Note: For more information on this process, see Scan for Downstream Channel (on
page 7).
The following table illustrates the status of the front-panel LED status indicators
when the no downstream signal lock condition exists.
LED
Label
Status
1
POWER
ON
2
DS
BLINKING
3
US
OFF
4
ONLINE
OFF
5
LINK
ON or BLINKING
6
TEL 1
OFF
7
TEL 2
OFF
8
BATTERY
 ON WHEN BATTERY IS CHARGED
 BLINKING WHEN BATTERY CHARGE IS LOW
 OFF WHEN BATTERY NEEDS TO BE REPLACED (IF
OBSERVED WITH AC POWER APPLIED TO THE MODEM)
Check and Correct
1
On initial installation, or after a reset, allow the cable modem 5 to 8 minutes to
locate and lock on to the downstream channel.
2
Using the Web browser on the PC attached to the cable modem, access the
WebWizard by entering the following IP address: http://192.168.100.1. The Web
browser accesses the WebWizard and the Default page opens.
3
Select the Signal page and verify that the cable modem locks to the downstream
channel of the CMTS.
4
Check the power level and the Signal-to-Noise ratio to verify if it is outside of the
operating range.
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Chapter 4 Troubleshooting the Installation
5
Is the ratio outside of the operating range?


44
If yes, correct the downstream channel to the cable modem.
If no, go to step 6.
6
Check the status of the CMTS.
7
Check the status of the CMTS signal on the node attached to the cable modem.
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Ranging Not Complete
Ranging Not Complete
Description
After the cable modem finds the CMTS downstream channel and upstream
parameters, it starts the ranging and automatic adjustments stage. This stage adjusts
the timing offset and the power level for communication with the CMTS.
Note: For more information on this process, see Adjust Timing Offset and Power
Level (on page 9).
The following table illustrates the status of the front-panel LED status indicators
when the ranging not complete condition exists.
LED
Label
Status
1
POWER
ON
2
DS
ON
3
US
BLINKING
4
ONLINE
OFF
5
LINK
ON or BLINKING
6
TEL 1
OFF
7
TEL 2
OFF
8
BATTERY
 ON WHEN BATTERY IS CHARGED
 BLINKING WHEN BATTERY CHARGE IS
LOW
 OFF WHEN BATTERY NEEDS TO BE
REPLACED (IF OBSERVED WITH AC
POWER APPLIED TO THE MODEM)
Check and Correct
1
Using the Web browser on the PC attached to the cable modem, access the
WebWizard by entering the following IP address: http://192.168.100.1. The Web
browser accesses the WebWizard and the Default Page opens.
2
Select the Signal page and verify that the cable modem locks to the downstream
channel of the CMTS.
3
Check the upstream power level and the Signal-to-Noise ratio to verify if it is
outside of the operating range.
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Chapter 4 Troubleshooting the Installation
4
Is the upstream level or the ratio outside of the operating range?


46
If yes, correct the upstream channel to the cable modem.
If no, go to step 5.
5
Check the status of the CMTS.
6
Check the status of the CMTS signal on the node attached to the cable modem.
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IP Connectivity Not Complete
IP Connectivity Not Complete
Description
After completing the ranging stage, the cable modem then tries to establish IP
connectivity. In this process the cable modem obtains network connection
information and a cable modem IP address from provisioning servers located on the
network side of the CMTS interface. The cable modem accomplishes this with a
protocol called Dynamic Host Configuration Protocol (DHCP). If the cable modem
fails the establish IP connectivity stage it returns back to the scan for downstream
channel stage.
Note: For more information on this process, see Establish IP Connectivity (on page
10).
The following table illustrates the status of the front-panel LED status indicators
when the IP connectivity not complete condition exists.
LED
Label
Status
1
POWER
ON
2
DS
ON
3
US
ON
4
ONLINE
OFF
5
LINK
ON or BLINKING
6
TEL 1
OFF
7
TEL 2
OFF
8
BATTERY
 ON WHEN BATTERY IS CHARGED
 BLINKING WHEN BATTERY CHARGE IS LOW
 OFF WHEN BATTERY NEEDS TO BE REPLACED (IF
OBSERVED WITH AC POWER APPLIED TO THE MODEM)
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Chapter 4 Troubleshooting the Installation
Check and Correct
1
Using the Web browser on the PC attached to the cable modem, access the
WebWizard by entering the following IP address: http://192.168.100.1. The Web
browser accesses the WebWizard and the Default page opens.
2
Open the Signal page, and then select Cable Modem Status. The Cable Modem
Status list appears.
Example:
The following list shows an example of the Cable Modem Status list that you
could use to check the status of your cable modem:
notReady
notSynchronized
phySynchronized
usParametersAcquired
rangingComplete – (The cable modem should be at this status)
ipComplete
48
3
If the cable modem shows the status of rangingComplete, the cable modem has
a problem receiving the DHCP response from the provisioning server. In this
case, you should activate DHCP tracing on the CMTS.
4
If the CMTS shows the cable modem DHCP traffic, check the DHCP server for
possible problems.
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Registration Not Complete
Registration Not Complete
Description
In this phase, the cable modem requests the time of day and the configuration file for
the cable modem. The configuration file contains operational parameters for how the
user wants the cable modem to operate on the system. If the cable modem receives
an invalid configuration file, it may not be able to complete the registration process.
Depending on the type of error received, the cable modem may try to immediately
sign on again or resume the downstream scan. After the cable modem completes the
transfer operational parameters stage, the cable modem is able to register with the
CMTS.
Note: The CMTS may reject the registration of the cable modem, or the CMTS may
be unable to provide certain services requested by the cable modem.
The following table illustrates the status of the front-panel LED status indicators
when the registration not complete condition exists.
LED
Label
Status
1
POWER
ON
2
DS
ON
3
US
ON
4
ONLINE
BLINKING
5
LINK
6
TEL 1
 OFF if not connected to CPE
 ON or BLINKING if connected to CPE
OFF
7
TEL 2
OFF
8
BATTERY
 ON WHEN BATTERY IS CHARGED
 BLINKING WHEN BATTERY CHARGE IS LOW
 OFF WHEN BATTERY NEEDS TO BE REPLACED (IF
OBSERVED WITH AC POWER APPLIED TO THE MODEM)
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Chapter 4 Troubleshooting the Installation
Check and Correct
1
Using the Web browser on the PC attached to the cable modem, access the
WebWizard by entering the following IP address: http://192.168.100.1. The Web
browser accesses the WebWizard and the Default page opens.
2
Open the Signal page, and then select Cable Modem Status. The Cable Modem
Status list appears.
Example:
The following list shows an example of the Cable Modem Status list that you
could use to check the status of your cable modem:
usParametersAcquired
rangingComplete
ipComplete – (The cable modem should be at this status)
todEstablished
prsmTransferComplete
registrationComplete
operation
accessDenied
3
On the Status page of the WebWizard, verify that the cable modem IP address is
listed. If it is not listed, review the check and correct procedures in IP
Connectivity Not Complete (on page 47).
4
On the Status page of the WebWizard, verify that the configuration file name
displays in the Configuration field.
Note: This configuration file name is the name of the configuration file you
created.
5
Does the configuration file name exist?


If yes, go to step 6.
If no, verify that the TFTP server is receiving the request and responding to
the cable modem.
6
Access the WebWizard and select the Log page. Under the Level column, look
for “Informational,” and then locate the description “Processing Configuration
File.”
7
In the Processing Configuration File description, verify any SNMP or set errors.
If SNMP or set errors are listed, examine the configuration file for possible
invalid entries.
8
Check the CMTS to verify if it is operationally able to create new sessions. For
instance, you may see a large number of T timeout errors or that the CMTS has
rejected services requested by the cable modem.
Important: If you determine that your CMTS is not operating correctly, contact
technical support for your CMTS manufacturer.
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Troubleshooting for High-Speed Data Installations
Troubleshooting for High-Speed Data Installations
I cannot connect to the Internet
 Verify that the plug to your cable modem AC power is properly inserted into an
electrical outlet.
 Verify that your cable modem AC power cord is not plugged into an electrical
outlet that is controlled by a wall switch. If a wall switch controls the electrical
outlet, make sure the switch is in the ON position.
 Verify that the POWER and CABLE indicator lights on the front panel of your
cable modem are illuminated.
 Verify that the indicator lights on your router or other network connection
equipment are illuminated
 Verify that all cables are properly connected, and that you are using the correct
cables.
 Verify that your cable service is active and that it supports two-way service.
 Verify that TCP/IP is properly installed and configured on all devices if you are
using the Ethernet connections.
 Verify that you have followed the procedure in Install USB Drivers (on page 23)
if you are using the USB connection.
 Verify that you have called your service provider and given them the serial
number and MAC address of your cable modem.
 If you are using a cable signal splitter so that you can connect the cable signal to
other devices, remove the splitter and reconnect the cable so that the cable
modem is connected directly to the main cable input. If the cable modem now
functions properly, the cable signal splitter may be defective and may need to be
replaced.
 For best performance over an Ethernet connect, your PC should be equipped
with a 10/100Base-T network interface card.
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Chapter 4 Troubleshooting the Installation
My cable modem does not recognize the cable network
 The cable modem works with a standard, 75-ohm, RF coaxial cable. If you are
using a different cable, your cable modem will not function properly. Contact
your service provider to determine if you are using the correct cable.
 You may need to renew the IP address on your PC. Refer to How Do I Renew the
IP Address on My PC?, for instructions on how to renew the IP address for your
particular operating system.
 Your USB interface may be malfunctioning. Refer to the troubleshooting
information in your USB documentation.
How do I renew the IP address on my PC?
If your PC cannot access the Internet after the cable modem is online, it is possible
that your PC did not renew its IP address. Follow the appropriate instructions in this
section for your operating system to renew the IP address on your PC.
Renewing the IP Address on Windows NT, 2000, or XP Systems
1 Click Start, and then click Run. The Run window opens.
2
Type cmd in the Open field and click OK. A window with a command prompt
opens.
3
Type ipconfig/release at the C:/ prompt and press Enter. The system releases
the IP address.
4
Type ipconfig/renew at the C:/ prompt and press Enter. The system displays a
new IP address.
5
Click the X in the upper-right corner of the window to close the Command
Prompt window. You have completed this procedure.
Note: If you cannot access the Internet, contact your service provider for further
assistance.
Renewing the IP address on Windows 95, 98, 98SE, and ME Systems
1 Click Start, and then click Run to open the Run window.
52
2
Type winipcfg in the Open field, and click OK to execute the winipcfg
command. The IP Configuration window opens.
3
Click the down arrow to the right of the top field, and select the Ethernet adapter
that is installed on your PC. The IP Configuration window displays the Ethernet
adapter information.
4
Click Release, and then click Renew. The IP Configuration window displays a
new IP address.
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Troubleshooting for High-Speed Data Installations
5
Click OK to close the IP Configuration window, you have completed this
procedure.
Note: If you cannot access the Internet, contact your service provider for further
assistance.
Renewing the IP Address on Macintosh Systems
1 Close all open programs.
2
Open your Preferences folder.
3
Drag the tcp/ip preferences file to the Trash.
4
Close all open windows and empty the Trash.
5
Restart your computer.
6
As your computer starts, simultaneously press and hold down the Command
(Apple), Option, P, and R keys on your keyboard. Keeping those keys pressed
down, power on your Macintosh but do not release these keys until you hear the
Apple chime at least three times; then, release the keys and let the computer
restart.
7
When your computer fully reboots, click the Apple icon in the upper-left corner
of the Finder. Scroll down to Control Panels, and then click TCP/IP.
8
Click Edit on the Finder at the top of the screen. Scroll down to the bottom of the
menu, and then click User Mode.
9
Click Advanced in the User Mode window, and then click OK.
10 Click the Up/Down selector arrows located to the right of the Connect Via
section of the TCP/IP window, and then click Using DHCP Server.
11 Click Options in the TCP/IP window, and then click Active in the TCP/IP
Options window.
Note: In some cases, the Load only when needed option does not appear. If it
appears, select the option. A check mark appears in the option.
12 Verify that the Use 802.3 option located in the upper-right corner of the TCP/IP
window is not selected. If there is a check mark in the option, select the option to
clear the check mark, and then click Info in the lower-left corner.
13 Is there a Hardware Address listed in this window?

If yes, click OK. To close the TCP/IP Control Panel window, click File, and
then scroll down to click Close.

If no, repeat these instructions from step 6.
14 Reboot your computer.
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Chapter 4 Troubleshooting the Installation
Troubleshooting for Telephony Installations
This section provides troubleshooting suggestions and check and correct tips for
telephony installations.
Common Troubleshooting Suggestions
The modem does not register a cable connection
The modem works with a standard, 75-ohm, RF coaxial cable. If you are using a
different cable, your cable modem will not function properly. Contact your service
provider to determine whether you are using the correct cable.
There is no dial tone when I lift the telephone handset
 Your telephone wiring may be connected to the wrong RJ-11 port on the cable
modem. The cable modem has two telephone ports. Verify that you are
connected to the correct telephone port.
 There may be a problem with your telephone set. Use a different telephone set
and listen to hear dial tone.
 There may be a problem with your home telephone wiring. Use a telephone and
connect directly to the same RJ-11 port on the back of the unit. If the dial tone is
working here but does not work at other locations in the home, a professional
may need to diagnose and repair a problem with your telephone wiring.
 Verify that the phone company has removed the previous telephone service from
your home telephone wiring.
 Your telephone service may not be enabled from your cable telephony service
provider. Contact your cable telephony service provider for more information.
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Troubleshooting for Telephony Installations
Frequently Asked Questions
Q. What if I don't subscribe to telephone service from my cable operator, can I
still use the cable modem to make and receive phone calls?
A. No. Telephone service is enabled for each telephone port on the cable modem by
the cable telephony service provider. Contact your cable telephony service provider
to get telephone service through the cable modem.
Q. How do I arrange for installation?
A. Professional installation from your cable telephony service provider may be
provided. A professional installer can connect the telephone service to your existing
telephone wiring in your home or install new wiring if needed. Professional
installation also ensures proper cable connection to the modem and to your PC, and
ensures proper configuration of all hardware and software settings. Contact your
cable telephony service provider for more information about installation.
Q. Can I use my existing phone number with the cable modem?
A. Telephone numbers are portable in some areas. Contact your telephone service
provider for more information about using an existing telephone number.
Q. Do I automatically receive high-speed Internet service with the cable modem?
A. Your cable modem may be used to provide telephone service, high-speed
Internet service, or both services. Your cable service provider enables Internet
service. Contact your cable service provider for more information if you are not
currently subscribing to Internet service.
Q. How many telephones can I connect?
A. The RJ-11 telephone-style connectors on the cable modem can each provide
telephone service to multiple telephones, fax machines, and analog modems. The
maximum number of telephone devices connected to each RJ-11 port is limited by
the total Ringing Load of the telephone devices that are connected. Many telephone
devices are marked with a Ringer Equivalent Number (REN). Each telephone port
on the cable modem can support up to a 5 REN load. The sum of the REN load on all
of the telephone devices attached to each port must not exceed 5 REN.
Q. Can I surf the Internet and make telephone calls at the same time?
A. Absolutely! Telephone service is provided separately from Internet data services.
Internet surfing and other data services do not affect the quality of your telephone
calls. If these services are enabled by your cable service provider, you can make
telephone calls and surf the net at the same time.
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55
5 Chapter 5
Operating the DPC2203C
Introduction
This chapter discusses the operational features related to the
DPC2203C, the WebWizard, and Cable Modem Access Protection.
This chapter also provides a description of WebWizard features along
with sample WebWizard HTML pages.
Access to these HTML pages is defined and configured by the system
operator; therefore, you may or may not have access to the
WebWizard. The system operator can enable other pages after
registration by using a configuration variable.
In This Chapter

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WebWizard ............................................................................................ 58
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Chapter 5 Operating the DPC2203C
WebWizard
The WebWizard is a multi-level access Web browser interface that provides a
method for network operators and subscribers (when requested and authorized by
the network administrator) to access key information about the configuration and
operational status of the cable modem. This multi-level access facilitates setup and
troubleshooting on the cable modems.
The WebWizard eliminates the need to load additional setup software on the CPE
because the WebWizard software is embedded in the cable modem. In addition to
the WebWizard, the lights on the front panel of the cable modem provide visual
feedback of real-time data transmission and operating status.
WebWizard Features
The WebWizard includes the following outstanding features:
 Web browser-based interface
 Industry standard IP addressing scheme
 Multiple levels of access
 Integrated DHCP and HTML server
 Hyperlinks to facilitate access to our website
WebWizard Operation
After you power on, the cable modem provides each connected CPE with a
temporary IP address that allows the CPE(s) to access the WebWizard prior to
registering on the network. The following guidelines apply:
 The cable modem uses the industry default IP address of 192.168.100.1 for the
WebWizard.
 Prior to registering on the network, the CPE has access to the WebWizard HTML
pages.
 If enabled, the Basic, Advanced, and Cisco HTML pages are embedded links and
are available to the user.
Note: Access to these HTML pages is defined and configured by the system
operator on the Technical Support page (see "Display the Technical Support
Page" on page 65).
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WebWizard
Power Cycling and Reboots
When power is restored after a power outage, the cable modem reboots normally.
Reset
The cable modem returns to the factory default level of access when you activate the
factory reset switch. Press and hold the factory reset switch for 10 seconds to return
the cable modem to its factory default settings.
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Chapter 5 Operating the DPC2203C
System Page
This section provides an example of the System page. The System page displays
system information about the cable modem, including the serial number, MAC
address, software version, hardware version and software build and revision
information.
System Page Example
The following illustration is an example of the System page.
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WebWizard
Signal Page
This section provides an example of the System page. The System page displays
system information about the cable modem, including the serial number, MAC
address, software version, hardware version and software build and revision
information.
Signal Page Example
The following illustration is an example of the Signal page.
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Chapter 5 Operating the DPC2203C
Basic Status Page
This section provides an example of the Status page. The Status page displays
information about the status of the communications between the cable modem and
the cable modem network.
Status Page Example
The following illustration is an example of the Status page.
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WebWizard
Display the Cable Modem Event Log
This section provides an example of the Event Log page. The Log page provides
important information that can be used to resolve problems with your cable modem.
Notes:
 The Event Log displays on both the Basic and Advanced tabs.
 The Event Log page displays events in the order they occur with the most recent
event at the top of the list.
Event Log Example
The following illustration is an example of the Log page.
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Chapter 5 Operating the DPC2203C
EMTA Page
This section provides an example of the EMTA page. The EMTA page provides
important information about the current status of your cable modem.
EMTA Page Example
The following illustration is an example of the EMTA page.
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WebWizard
Display the Technical Support Page
This section provides information about the Technical Support page. You can use the
Technical Support page to set the subscriber access levels of each section of the cable
modem. There are three sections you can control:
 Telnet Status
 HTTP LAN Access
 HTTP WAN Access
You can set these sections to one of the following three states:
 Disable—The subscriber cannot access the pages associated with this section
 Basic—The subscriber can access only the Basic tab for the pages associated with
this section
 Advanced—The subscriber can access the Advanced tab for the pages associated
with this section
Notes:
 The CPE can access this page prior to registration and at Access Level 2.
 You can access the Technical Support page by clicking the Advanced tab.
72-4017315-01 Rev B
65
A
Appx auto letter
Specifications
Appendix A
Introduction
This appendix contains the technical specifications for the DPC2203C.
In This Appendix

72-4017315-01 Rev B
Technical Specifications ....................................................................... 68
67
Appendix A
Specifications
Technical Specifications
DPC2203C Specifications
Specifications Table
The following table shows the technical specifications for the Model DPC2203C
Cable Modem.
Voice Specifications
Call Signaling Protocol
Provisioning Modes
CODECs

MGCP/NCS including configurable IPSec
encryption



Configurable to support LCS event signaling



Full PacketCable secure provisioning

Configurable for non-PacketCable (MTA
configuration using DOCSIS config file)


Standard: G.711 µ and A law and G.728
Configurable to support RFC2833 event signaling
Software upgradable to support Session Initiation
Protocol (SIP)
Kerberos support with NVRAM ticket caching
Configurable PacketCable-lite (MTA config file
provisioning without security)
Software upgradable to support other CODEC
combinations including:
– G.711, T.38 Fax Relay, iLBC and BV16
– G.711 and G.729
– G.711 and G.729 a/e
– G.711 and BV16 and BV32 (High fidelity - near
CD quality)
– G.711 and G.723
– G.711 and G.726
68
CODEC Packetization Intervals
10ms, 20ms, and 30ms
CODEC Synchronization
Patented CODEC synchronization to UGS time clock
allows slip-free end-to-end synchronization to PSTN
clock (minimizes frame slips that can cause Fax/Analog
modem call failures)
CODEC Encryption
Configurable to support AES-128 encryption or no
encryption modes
72-4017315-01 Rev B
Technical Specifications
Voice Specifications
Hearing Impaired Services
Support
TDD support including detection of V.18 including
Annex A
Fax and Analog Modem support DSP-based Modem/Fax Tone detection and support for
Voice Band Data Mode with auto-CODEC negotiation
and auto-control of echo canceller, jitter buffer, and VAD
Jitter Buffer Support
Adaptive dynamically controlled
Latency Control
Configurable min/max jitter buffer size
Audio Gain Levels
Independently configurable transmit and receive audio
gains
Silence Suppression
Configurable VAD with comfort noise generation
Packet Loss Concealment
ANSI T1.521-1999
Call Connection Quality
Monitoring
RTCP, RFC1889, RFC1890, SNMP MIB for last call
quality statistics
Dialing Modes
DTMF and configurable pulse dial support
DTMF Relay
RFC2833 including fast (40mS) DTMF Relay for alarm
system signaling compatibility
Layer 2 Quality of Service

Full PacketCable secure DQOS with GateID
including UGS and UGS/AD

DQOS Lite support including UGS and UGS/AD
Layer 3 Quality of Service
Configurable DiffServe/TOS support for Signaling, RTP,
and RTCP flows
Payload Header Suppression
(PHS)

Support for RTP and RTCP packet flows to reduce
per-call network bandwidth

Advanced support for Dynamic Payload Header
Suppression using Propane Technology
Management
SNMPv3, SNMPv2, Telnet with configurable user ID and
password, internal log, and external Syslog support
Echo Cancellation
G.168 with extended echo tail support
72-4017315-01 Rev B
69
Appendix A
Specifications
Voice Specifications
Call Feature Support





Caller ID




Ring splash

Other call features available with compliant CMS or
gateway
Call Waiting with Caller ID
Call Conferencing (3-way calls)
Configurable hook flash support
Distinctive ringing (Configurable for up to 11 ring
patterns per phone line)
Stutter dial tone
Off hook warning tone
Open Switch Interval support to enhance answering
machine compatibility
Telephone Ring Loading
Full 5 REN support on each phone line (10 REN total)
Ring Signal
Configurable balanced ring with optional DC offset
Max phone line distance
Supports up to 1000 ft of AWG26 wire (0.4mm) on each
phone line. Supports operation with typical in-home
telephone wiring
Country specific telephone
parameters supported
United States, Japan, United Kingdom, Germany, France,
Belgium, Netherlands, Finland, Italy, Switzerland,
Sweden, Denmark, Brazil, ETSI 101-909-18
High Speed Data
Simultaneous Access
Bridged Ethernet and USB data ports
Cable Modem Access Protection Software-based standby feature disables bridging to the
WAN when enabled
Max CPE
Configurable up to 64 CPE devices
(1 USB and 63 Ethernet)
RF Downstream
70
Frequency Range
88 to 860 MHz
Demodulation
64 QAM or 256 QAM
Maximum Data Rate


30 Mbps for 64 QAM
43 Mbps for 256 QAM
72-4017315-01 Rev B
Technical Specifications
RF Downstream
Bandwidth
6 MHz
Operating Level Range
–15 to +15 dBmV
Input Impedance
75 ohms
RF Upstream
Frequency Range
5 to 42 MHz
Modulation







Maximum Data Rate
QPSK
16 QAM
64 QAM
128 QAM TCM
5.12 Mbps for QPSK
10.2 Mbps for 16 QAM
30.0 Mbps for A-TDMA and SCDMA
Bandwidth
200 kHz to 6.4 MHz
Operating Level Range


Output Impedance
TDMA: +8 to + 61 dBmV
SCDMA: +8 to +61 dBmV
75 ohms
Electrical
Input Voltage


Standard housing: 12 VDC
Optional housing (battery backup): 15 VDC
Power Consumption (modem
module)
< 4 Watts, on-hook
Data Ports

One (1) RJ-45 Ethernet port, 10/100Base-T (autosensing with auto-MDIX)

One (1) USB 1.1 Type 2
RF
One (1) female “F” type
Telephone / Fax
Two (2) RJ-11 supporting single line and multi-line
pinout
Battery Backup
Cell Technology
72-4017315-01 Rev B
Lithium-Ion
71
Appendix A
Specifications
Battery Backup
Battery Telemetry Signals
Battery low, replace battery, AC fail, battery missing
Telemetry Options


Configurable SNMP traps per signal event
SNMP poll options
Battery LEDs
Battery low, replace battery, AC fail
Battery Cartridge Capacity


1200 mAh Li-Ion battery cartridge
2200 mAh Li-Ion battery cartridge
Mechanical (Module only)
Dimensions (H x D x W)
Weight (approximate)
(Including "F" connector)

Standard housing: 5.9 in. x 5.3 in. x 1.4 in. (15 cm x
13.5 cm x 3.5 cm)

Optional housing (battery backup): 5.9 in. x 5.3 in. x
2.625 in. (15 cm x 13.5 cm x 6.5 cm)


Standard housing: 10.16 oz (0.29 kg)
Optional housing (battery backup): 12.6 oz (0.36 kg),
no battery
Operating Temperature
32 to 104˚F (0 to 40˚C)
Operating Humidity
0-90% RH non-condensing
Storage Temperature
–4 to 158˚F (–20 to 70˚C)
Standards Compliance and Compatibility
The DPC2203C is designed to comply with the following standards:
 PacketCable 1.5
 PacketCable 1.0
 DOCSIS 2.0
 WHQL
Regulatory Compliance
Approvals as required per country where the DPC2203C will be used.
72
72-4017315-01 Rev B
B
Appx auto letter
Cable Modem Warranty and
RMA Information
Appendix B
Introduction
This appendix contains cable modem Warranty and Return Materials
Authorization (RMA) information and includes an FAQ section.
In This Appendix

72-4017315-01 Rev B
Warranty and RMA Information ........................................................ 74
73
Appendix B
Cable Modem Warranty and RMA Information
Warranty and RMA Information
Cable Modem Warranty Information
These cable modems enable you to access the Internet on your home computer
through your cable TV line. Your local cable service provider becomes your Internet
service provider. Should you experience problems, always consult with your local
cable service provider to determine whether the problem is related to the cable
network or your cable modem.
Frequently Asked Questions
What does your warranty cover?
 Any defect in materials or workmanship that arises during the term of this
warranty.
What is the duration of your warranty?
 The warranty for labor and parts is 60 months from purchase date.
 All warranty claims must be made during the 60-month period.
What will we do?
 Repair or replace, at our option, the cable modem, at no expense to you, within a
reasonable time after we receive the cable modem from you.
 We will repair or replace defective Product or parts, at our option, with a new or
reconditioned cable modem or parts with equivalent or enhanced features. All
repair or replacement of the cable modem must be performed by us or by an
Authorized Service Provider. Reconditioned cable modems or parts will be equal
in performance to the original cable modem or parts. All original cable modems
or parts we replace become our property. Any replaced or repaired cable modem
or part is warranted under the same terms as this Limited Warranty for a period
of 90 days after the date of repair or replacement, or for the remainder of the
initial warranty period, whichever is longer.
How do you obtain warranty service?
 In order to receive warranty service, you must contact your Customer Service
Center within 30 days after discovering that your cable modem has a defect in
materials or workmanship. Proof of purchase for the cable modem may be
required in order to validate warranty eligibility. If the cable modem requires
service, you will be given a return authorization number and instructions for
shipping the cable modem to us or to the location of the nearest Authorized
Service Provider. You must pre-pay all transportation costs, taxes, duties and
insurance charges incurred for shipment to us or to an Authorized Service
74
72-4017315-01 Rev B
Warranty and RMA Information
Provider, and you must properly pack the cable modem for shipment in the
original packaging or equivalent. You will not be reimbursed for these expenses.
If the cable modem is not insured and the cable modem is lost or damaged
during transit, you are responsible for such loss or damage.
What is not covered by your warranty?
 Customer instruction. (Your owner’s manual clearly describes how to install,
adjust, and operate your cable modem. Obtain additional information from your
cable service provider)
 Improper installation, maintenance or handling, storage, transportation, testing,
repair or related adjustments
 Signal reception problems not caused by your cable modem
 Damage from misuse or neglect
 Any defect that arises after the original purchaser of the cable modem transfers
the cable modem to a subsequent owner
 A cable modem with a trade name or logo other than our logo
 A cable modem that has been modified or incorporated into other products or is
used for institutional or other commercial purposes
 A cable modem purchased or serviced outside the U.S.A. and/or Canada
 Cosmetic problems or defects resulting from normal wear and tear under
ordinary use, which do not affect the performance or use of the cable modem
 Acts of God, such as but not limited to lightning damage
 External electrical fault or electrical surges
 Service other than by us or an Authorized Service Provider
 Any other cause outside of normal usage parameters
 Damage to or loss of any programs or data, or the costs of recovering such
programs or data
 Repairs that do not involve defective materials or workmanship are not covered
by this warranty. Costs of such repairs are the sole responsibility of the
purchaser
72-4017315-01 Rev B
75
Appendix B
Cable Modem Warranty and RMA Information
What additional provisions should I be aware of?
 Because it is impossible for us to know the purposes for which you acquired this
cable modem or the uses to which you will put this cable modem, you assume
full responsibility for the selection of the cable modem and for its installation and
use. While every reasonable effort has been made to ensure that you will receive
a cable modem that you can use and enjoy, we do not warrant that the functions
of the cable modem will meet your requirements or that the operation of the
cable modem will be uninterrupted or error-free. We are not responsible for
problems caused by changes in the operating characteristics of the hardware or
software you are using that are made after the release date of the version of
software accompanying the cable modem, nor are we responsible for problems
in the interaction of the cable modem with any other software or hardware.
How does state law or province law relate to this warranty?
 This warranty gives you specific legal rights, and you may also have other rights
that vary from state to state or province to province.
What if you purchased your modem outside the United States?
 This warranty does not apply. Contact your dealer for warranty information.
76
72-4017315-01 Rev B
Warranty and RMA Information
RMA Returns Policy and Procedure for Cable Modems
If for any reason your cable modem supplied by us needs to be returned for repair,
please use the following procedure.
Return Material Authorization (RMA) Procedure
1 Web- and Retail-Purchased Modems
Contact the vendor to arrange for repair and/or replacement.
2
Cable Service Provider-Purchased Modems
If for any reason your cable modem supplied by us needs to be returned for
repair, please use the following procedure that applies to your geographic
region:

North America
Telephone our Customer Service Center at 1-800-722-2009 to request a Return
Material Authorization (RMA) number. You will be asked for your name,
company, telephone, and fax number. In addition we will need to know the
model number, quantity of product returns, and the reason for product
return together with the repair disposition authority and details of any
current Service Contract entered into with us. An RMA fax request form is
available upon request. Complete the RMA fax request form and fax it to:
Customer Service, fax number: (770) 236-5477. Or you can contact Cisco
Services.

Latin America
Telephone our Customer Service Center, telephone number: +1-770-236-5662
to request a Return Material Authorization (RMA) number. You will be
asked for your name, company, telephone, and fax number. In addition, we
will need to know the model number, quantity of product returns, and the
reason for product return together with the repair disposition authority and
details of any current Service Contract entered into with us. An RMA fax
request form is available upon request. Complete the fax request form and
fax it to: Customer Service, fax number: +1-770-236-5888. Or you can contact
Cisco Services.
72-4017315-01 Rev B
77
Appendix B
Cable Modem Warranty and RMA Information

Asia/Pacific
Telephone our Customer Service Center at +852-2522-5059 to request a
Return Material Authorization (RMA) number. You will be asked for your
name, company, telephone, and fax number. In addition we will need to
know the model number, quantity of product returns, and the reason for
product return together with the repair disposition authority and details of
any current Service Contract entered into with us. An RMA fax request form
is available upon request. Complete the fax request form and fax it to:
Customer Service, fax number: +852-2522-5624. Or you can contact Cisco
Services.

Europe
Telephone our Customer Service Centre at +44 (0)1923-271422 during UK
office hours or at +44 (0)1923-271460 (24 hr Voicemail) to request a Return
Material Authorization (RMA) number. You will be asked for your name,
company, telephone, and fax number. In addition we will need to know the
model number, quantity of product returns, and the reason for product
return together with the repair disposition authority and details of any
current Service Contract entered into with us. An RMA fax request form is
available upon request. Complete the fax request form and fax it to:
Customer Service, fax number: +44 (0)1923-269018. Or you can contact Cisco
Services.
Important: It is important to tell the Customer Service Representative the
quantity of defective cable modems and defective external power supplies you
are returning.
PLEASE DO NOT RETURN NON-DEFECTIVE POWER SUPPLIES, POWER
CORDS AND ACCESSORY CABLES. Should you require that we ship
replacement Ethernet/USB cables, power cords, power supplies or installation
CDs with the return of your repaired cable modem(s), please be sure to request
either our RepairCare or RepairCare Plus service option. Charges WILL APPLY
for our RepairCare or RepairCare Plus service options regardless of the warranty
status of the cable modem.
3
A purchase order number or advance payment to cover "estimated" or "not to
exceed" repair costs will be requested at the time the RMA is issued. However,
should you be unable to issue a purchase order (for any reason) at the time of
your RMA request, a proforma invoice will be sent to you upon completion of
the repair that lists all costs incurred.
Note: In-warranty equipment can incur costs through damage/misuse, cosmetic,
or "no problem found." Equipment incurring costs will not be returned to the
customer without a valid purchase order number or alternative method of
payment such as credit card. Valid method of payment must be provided within
15 days of receipt of proforma invoice.
78
72-4017315-01 Rev B
Warranty and RMA Information
4
On issuance of an RMA number, goods returned to us should be clearly marked
to the attention of Factory Service, at the address given by the customer service
representative (CSR). A confirmation fax will be sent to you by the CSR that
details the RMA number, product and quantities authorized, shipping address
details, and RMA Terms and Conditions. For both in- and out-of-warranty
repairs, you are responsible for paying your outbound freight expense. We will
pay the return freight expense. This is standard procedure unless otherwise
modified by contractual agreement.
5
Cable modems returned for repair both in- and out-of-warranty should have a
tag attached that details the failure mode. A supply of these tags (Cable Modem
Repair Tag, part number 745330) will be issued free by calling the Customer
Service Center and requesting them.
6
It is preferable that the original packing, including any anti-static and foam
wrapping, be used on all returned equipment. Should the original equipment
packing not be available, then use adequate packing that takes into account the
method of shipment of the returned goods. You are responsible for delivering
the returned goods to us safely and undamaged. Improperly packaged
shipments, which may have caused additional damage, may be refused and
returned to you at your expense.
7
The RMA number should be clearly marked on all returned boxes and packages
including all accompanying paperwork. RMAs received by the Factory Service
receiving department that are not clearly marked may be refused and returned to
you at your expense.
8
International shipments should be consigned to us with the notified party on the
airway bill stated as “Expediters International for Customs clearance.”
9
On receipt of equipment returned under an RMA that matches the authorized
quantities and/or product (model or part number), a fax will be sent to you by
Repair Receiving that confirms receipt of product and details the anticipated
repair/exchange completion date.
10 If equipment returned under an RMA does not match the authorized quantities
and/or product (model or part number), Repair Receiving will send a fax to you
that details the nature of the discrepancy. A representative will contact you to
resolve the discrepancy.
11 Equipment returned under an RMA that does not match the authorized
quantities and/or product (model or part number) will be held for 5 days
(domestic) and 10 days (international) while the Customer Service
Representative tries to resolve the discrepancy and/or exception with you.
RMAs that are still discrepant at the end of this period will be amended to reflect
the received quantities and/or product (model or part number) as being correct.
You will then receive a fax from Repair Receiving that informs you of the
changes made to the RMA.
72-4017315-01 Rev B
79
Appendix B
Cable Modem Warranty and RMA Information
12 Return Material Authorization RMA numbers are only valid for 60 days. RMA
numbers older than 60 days need to be revalidated by you before the equipment
is returned. Failure to comply with the above may delay the processing of your
RMA or result in the equipment being refused and being returned to you at your
expense.
13 Equipment that has been repaired in accordance with the instructions given to
the CSR at the time the RMA was issued and where charges have been incurred
for which there is no covering purchase order, the following conditions apply:

Completed repairs that are aged greater than 30 days following the end of
repair for which no purchase order number or letter of credit (L/C) is
provided will incur an interest charge of 1.5% per month of the repair
charges.

Completed repairs that are aged greater than 90 days following the end of
repair for which no purchase order number or L/C is provided will become
our property to dispose of to enable recovery of the repair expense.
Important: Please help us to process your repairs/claims as quickly as possible by
following the above procedure.
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72-4017315-01 Rev B
Cisco Systems, Inc.
5030 Sugarloaf Parkway, Box 465447
Lawrenceville, GA 30042
678 277-1120
800 722-2009
www.cisco.com
This document includes various trademarks of Cisco Systems, Inc. Please see the Notices
section of this document for a list of the Cisco Systems, Inc. trademarks used in this
document.
Product and service availability are subject to change without notice.
© 2008, 2012 Cisco and/or its affiliates.
All rights reserved.
September 2012 Printed in USA
Part Number 72-4017315-01 Rev B
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