Cisco DPC3941 User manual

OL-29163-01 Rev A
Cisco Model DPC3941 DOCSIS
3.0 16x4 Wireless Residential
Voice Gateway
User 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
TrademarkAcknowledgments
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 is a registered trademark of Cable
Television Laboratories, Inc. EuroDOCSIS, EuroPacketCable, and PacketCable are
trademarks of Cable Television Laboratories, Inc. The Wi-Fi Protected Setup mark is
a mark of the Wi-Fi Alliance. Wi-Fi Protected Setup is a trademark of the Wi-Fi
Alliance.
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)
PublicationDisclaimer
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.
Disclaimer
The maximum performance for wireless is derived from IEEE Standard 802.11
specifications. Actual performance can vary, including lower wireless network
capacity, data throughput rate, range and coverage. Performance depends on many
factors, conditions and variables, including distance from the access point, volume of
network traffic, building materials and construction, operating system used, mix of
wireless products used, interference and other adverse conditions.
SoftwareandFirmwareUse
The software described in this document is protected by copyright law and
furnished to you under a license agreement. You may only use or copy this software
in accordance with the terms of your license agreement.
The firmware in this equipment is protected by copyright law. You may only use the
firmware in the equipment in which it is provided. Any reproduction or distribution
of this firmware, or any portion of it, without our express written consent is
prohibited.

Copyright
© 2013 Cisco Systems, Inc. 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.

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.
Noticeàl’attentiondesinstallateurs 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.

MitteilungfürCATV-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.
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.
20080814_Installer820_Intl

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Contents
IMPORTANT SAFETY INSTRUCTIONS v
United States FCC Compliance x
About This Guide xii
Chapter 1 Introducing the DOCSIS Wireless Residential Voice
Gateway 1
Introduction.............................................................................................................................. 2
What's In the Carton?.............................................................................................................. 4
Front Panel Description .......................................................................................................... 5
Top Panel Description............................................................................................................. 7
Bottom Panel Description ....................................................................................................... 8
Back Panel Description............................................................................................................ 9
Chapter 2 Installing the DOCSIS Wireless Residential Voice
Gateway 11
Installation Preparations....................................................................................................... 12
Install the Wireless Residential Voice Gateway ................................................................ 19
Configure Wireless Settings ................................................................................................. 22
MoCA Installation Guidelines ............................................................................................. 31
Chapter 3 Operation of Front Panel Indicators 35
Initial Power Up, Calibration, and Registration (AC Power applied) ........................... 36
Normal Operations (AC Power Applied) .......................................................................... 38
Special Conditions ................................................................................................................. 39
Chapter 4 Maintaining the Battery 41
Location of the Battery .......................................................................................................... 42
Battery Maintenance.............................................................................................................. 43

Contents
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Chapter 5 Troubleshooting the DOCSIS Wireless Residential
Voice Gateway 45
Frequently Asked Questions................................................................................................ 46
Common Troubleshooting Issues........................................................................................ 52
Tips for Improved Performance ..........................................................................................54
Chapter 6 Customer Information 55

IMPORTANT SAFETY INSTRUCTIONS
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IMPORTANT SAFETY INSTRUCTIONS
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturer's
instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
9) 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.
10) Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12)
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.
13) Unplug this apparatus during lightning storms or when unused for long periods of
time.
14) 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.
PowerSourceWarning
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.
GroundtheProduct
WARNING: Avoid electric shock and fire hazard! 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.

IMPORTANT SAFETY INSTRUCTIONS
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OutdoorGroundingSystem
If this product connects to an outdoor antenna or cable system, be sure the antenna or cable system is
grounded (earthed). This provides some protection against voltage surges and built-up static charges.
Article 810 of the National Electric Code (NEC) ANSI/NFPA No. 70-1990, provides the following
information:
 Grounding of the mast and supporting structure
 Grounding the lead-in wire to an antenna discharge unit
 Size of the grounding conductors
 Location of the antenna-discharge unit
 Connection to grounding electrodes
 Requirements for the grounding electrodes (see the following antenna grounding diagram as
recommended by NEC ANSI/NFPA 70)
WARNING: Avoid electric shock and fire hazard! Do not locate an outside antenna
system in the vicinity of overhead power lines or power circuits. Touching power lines
or circuits might be fatal.
ProtecttheProductfromLightning
In addition to disconnecting the AC power from the wall outlet, disconnect the signal inputs.
Verifythe 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 may go out when the apparatus is turned off, regardless of whether it is still plugged
into an AC power source.

IMPORTANT SAFETY INSTRUCTIONS
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EliminateAC Power/Mains Overloads
WARNING: Avoid electric shock and fire hazard! Do not overload AC power/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.
HandlingDisposableBatteries
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, follow the Battery Safety and Battery Disposal instructions below, 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.
Battery Safety
 Insert batteries correctly. There may be a risk of explosion if the batteries are incorrectly inserted.
 Do not attempt to recharge ‘disposable’ or ‘non-reusable’ batteries.
 Please follow instructions provided for charging ‘rechargeable’ batteries.
 Replace batteries with the same or equivalent type that we recommend.
 Do not expose batteries to excessive heat (such as sunlight or fire).
 Do not expose batteries to temperatures above 100°C (212°F).
Battery Disposal
 The batteries may contain substances that could be harmful to the environment.
 Recycle or dispose of batteries in accordance with the battery manufacturer’s instructions and
local/national disposal and recycling regulations.
 The batteries may contain perchlorate, a known hazardous substance, so special handling and
disposal of this product might be necessary. For more information about perchlorate and best
management practices for perchlorate-containing substance, see
www.dtsc.ca.gov/hazardouswaste/perchlorate

IMPORTANT SAFETY INSTRUCTIONS
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ProvideVentilationandSelect a Location
 Remove all packaging material before applying power to the product.
 Make certain to operate this unit only in a vertical position.
 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 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 ventilation openings.
OperatingEnvironment
This product is designed for operation indoors with a temperature range from 32° to 104° F (0° to 40°C).
Each product should have adequate spacing on all sides so that the cooling air vents on the chassis are
not blocked.
ProtectfromExposuretoMoisture and Foreign Objects
WARNING: Avoid electric shock and fire hazard! Do not expose this product to
dripping or splashing liquids, rain, or moisture. Objects filled with liquids, such as
vases, should not be placed on this apparatus.
WARNING: Avoid electric shock and fire hazard! Unplug this product before cleaning.
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.
ServiceWarnings
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.
CheckProductSafety
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.
ProtecttheProductWhenMovingIt
Always disconnect the power source when moving the apparatus or connecting or disconnecting
cables.

IMPORTANT SAFETY INSTRUCTIONS
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Telephone Equipment Notice
When using your telephone equipment, basic safety precautions should always be followed to reduce
the risk of fire, electric stock and injury to persons, including the following:
1. Do not use this product near water, for example, near a bath tub, wash bowl, kitchen sink or laundry
tub, in a wet basement or near a swimming pool.
2. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a
remote risk of electric shock from lightning.
3. Do not use the telephone to report a gas leak in the vicinity of the leak.
Important: Interconnected telecommunication terminal equipment (for example via RJ11) must be
UL-listed and the connections must be made in accordance with Article 800 of the NEC.
CAUTION: To reduce the risk of fire, use only No. 26 AWG or larger
telecommunication line cord.
SAVE THESE INSTRUCTIONS
20110316_Cable_Safety
20110316_Modem No Battery_Safety
20110316_Modem with Battery_Safety
20110316_Modem DSL_Safety

United States FCC Compliance
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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.
 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.
 Consult the service provider or an experienced radio/television technician for help.
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
service provider for any questions you may have regarding the operation or installation of this device.
DeclarationofConformity
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.
DOCSIS Wireless Residential Voice
Gateway
Model(s): DPC3941
Manufactured by:
Cisco Systems, Inc.
5030 Sugarloaf Parkway
Lawrenceville, Georgia 30044 USA
Telephone: [phone]
CanadaEMIRegulation
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.
RFExposureStatements
Note: This transmitter must not be co-located or operated in conjunction with any other
antenna or transmitter. This equipment should be installed and operated with a minimum
distance of 7.9 inches (20 cm) between the radiator and your body.

United States FCC Compliance
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US
This system has been evaluated for RF exposure for humans in reference to ANSI C 95.1
(American National Standards Institute) limits. The evaluation was based in accordance with
FCC OET Bulletin 65C rev 01.01 in compliance with Part 2.1091 and Part 15.27. The minimum
separation distance from the antenna to general bystander is 7.9 inches (20 cm) to maintain
compliance.
Canada
This system has been evaluated for RF exposure for humans in reference to Canada Health
Code 6 (2009) limits. The evaluation was based on evaluation per RSS-102 Rev 4. The
minimum separation distance from the antenna to general bystander is 7.9 inches (20 cm) to
maintain compliance.
20100527 FCC DSL_Domestic
For product available in the USA/Canada market, only channel 1~11 can be operated.
Selection of other channels is not possible.
This device and it's antennas(s) must not be co-located or operating in conjunction with any
other antenna or transmitter except in accordance with FCC multi-transmitter product
procedures.
This device is going to be operated in 5.15~5.25GHz frequency range, it is restricted in indoor
environment only.

About This Guide
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About This Guide
Introduction
Welcome. This guide provides instructions and recommendations for placing,
installing, configuring, operating, maintaining, and troubleshooting the Cisco®
Model DPC3941 DOCSIS 3.0 x4 Wireless Residential Voice Gateway (DPC3941).
Purpose
This guide covers the DPC3941. All features described in this guide are standard to
this residential gateway unless otherwise noted as an optional feature.
Audience
This guide is written for the home subscriber.
DocumentVersion
This is the first formal release of this document.

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Introduction
This chapter provides an overview of residential gateway features,
indicators, and connectors to help you become familiar with the
residential gateway and the benefits it offers. This chapter also lists the
accessories and equipment that are provided with the residential
gateway so you can verify that you received all of these items.
1 Chapter 1
Introducing the DOCSIS
Wireless Residential Voice
Gateway
In This Chapter
 Introduction............................................................................................. 2
 What's In the Carton?............................................................................. 4
 Front Panel Description ......................................................................... 5
 Top Panel Description............................................................................ 7
 Bottom Panel Description...................................................................... 8
 Back Panel Description .......................................................................... 9

Chapter 1 Introducingthe DOCSIS Wireless Residential Voice Gateway
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Introduction
IntroducingtheDPC3941 Wireless Residential Voice Gateway
The Cisco®Model DPC3941 DOCSIS 3.0 x4 Wireless Residential Voice Gateway
(DPC3941) is an advanced, high-performance home gateway that combines Ethernet,
Voice over IP (VoIP), router, and wireless access point technologies in a single device
to provide a cost-effective voice and networking solution for Connected Home and
Managed Home experiences.
This chapter lists the benefits and features of the DPC3941. Illustrations and
descriptions of the connection ports, buttons, and LED indicators are also provided.
BenefitsandFeatures
Your new residential gateway offers the following outstanding benefits and features.
DOCSIS
 Eight bonded downstream channels with a total throughput in excess of 300
Mbps
 Compliant with DOCSIS 3.0, 2.0, 1.1, and 1.0 standards to deliver high-end
performance and reliability
 Enhanced packet processing technology to maximize performance
Connections
 Multimedia over Coax Alliance (MoCA) networking over coaxial cable in the
home
 Four 10/100/1000BASE-T Ethernet ports to provide wired connectivity
 High-performance broadband Internet connectivity to energize your online
experience
 Two ATA Ports with SIP Client support
 Supports separate phone numbers on each port
 Dual universal serial bus (USB) host support (contact your service provider for
more information)
 WPS, including a push-button switch to activate WPS for simplified and secure
wireless setup

Introduction
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Design and Function
 Embedded network management client for simplified out of the box setup and
configuration
 Local device management via web-based GUI
Management
User-configurable Parental Control blocks access to undesirable Internet sites
 Simplified, unified home network management
 Advanced firewall technology deters hackers and protects the home network
from unauthorized access
 Allows automatic software upgrades by your service provider
 DOCSIS-compliant secure software downloads

Chapter 1 Introducingthe DOCSIS Wireless Residential Voice Gateway
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What's In the Carton?
When you receive your residential gateway, you should check the equipment and
accessories to verify that each item is in the carton and that each item is undamaged.
The carton contains the following items:
One DPC3941 DOCSIS Wireless
Residential Voice Gateway
One AC power cord
One Lithium Ion cartridge battery
(May not be provided with all
products.)
If any of these items are missing or damaged, please contact your service provider
for assistance.
Notes:
 You need an optional cable signal splitter and additional standard RF coaxial
cables if you want to connect a VCR, a Digital Home Communications Terminal
(DHCT) or a set-top converter, or a TV to the same cable connection as your
residential gateway.
 If your product supports telephone service, cables and other equipment needed
for telephone service must be purchased separately. Contact your service
provider to inquire about the equipment and cables you need for telephone
service.