Cisco DPC3940 User manual

OL- 30505-01
Cisco Model DPC3940 DOCSIS 3.0
16x4 Wireless Residential Gateway
with Embedded Digital Voice Adapter
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
Trademark Acknowledgments
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)
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.
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.
Software and Firmware Use
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.

OL-30505-01 iii
Contents
IMPORTANT SAFETY INSTRUCTIONS vii
United States FCC Compliance xi
CE Compliance xiii
Chapter 1 Introducing the DOCSIS Wireless Residential Voice
Gateway 1
Introduction .........................................................................................................................2
What's In the Carto n? ..........................................................................................................3
Front Panel Description ......................................................................................................5
Back Panel Description .......................................................................................................7
Chapter 2 Installing the DOCSIS Wireless Residential Voice
Gateway 9
Installation P reparations ...................................................................................................10
Install the Wireless Res idential Voice Gateway ..............................................................17
Chapter 3 Operation of Front Panel Indicators 19
Initial Power Up, Calibration, and Registration (AC Power Applied)..........................20
Normal Op erations (AC Power Applied) .......................................................................22
Special Conditions .............................................................................................................24
Chapter 4 Maintaining the Battery 25
Location of the Battery ......................................................................................................26
Battery Maintenance .........................................................................................................27
Chapter 5 Troubleshooting the DOCSIS Wireless Residential
Voice Gateway 29
Frequently Asked Questions ............................................................................................30
Common Troubleshooting Issues ....................................................................................35
Tips for Improved Performa nce .......................................................................................37

Contents
iv OL-30505-01
Chapter 6 Customer Information 39
Index 41

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.
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.

Mitteilung fürCATV-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

IMPORTANT SAFETY INSTRUCTIONS
OL-30505-01 vii
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 are 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.
Power Source Warning
A label on this product indicates the correct power source for this product. Oper ate 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.

IMPORTANT SAFETY INSTRUCTIONS
viii OL-30505-01
Groundthe Product
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.
Protect the Product from Lightning
In addition to disconnecting the AC power from the wall outlet, disconnect the signal inputs.
Verify the Power Source fromthe 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.
Eliminate AC 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.
Handling Disposable Batteries
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.

IMPORTANT SAFETY INSTRUCTIONS
OL-30505-01 ix
 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
Provide Ventilation and Select a Location
 Remove all packaging material before applying power to the product.
 Do not place this apparatus on a bed, sofa, rug, or similar surface.
 Do not place this apparatus on an unstable surfa ce.
 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.
Operating Environment
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.
Protect fromExposure to Moistureand ForeignObjects
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.
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.
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.

IMPORTANT SAFETY INSTRUCTIONS
x OL-30505-01
Protect the Product When MovingIt
Always disconnect the power source when moving the apparatus or connecting or disconnecting
cables.
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.
CAUTION: To reduce the risk of fire, use only No. 26 AWG or larger
telecommunication line cord.
SAVE THESE INSTRUCTIONS
20110316_ModemwithBattery_Safety

United States FCC Compliance
OL-30505-01 xi
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.
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.
DOCSIS Wireless Residential Voice
Gateway
Model(s): DPC3940
Manufactured by:
Cisco Systems, Inc.
5030 Sugarloaf Parkway
Lawrenceville, Georgia 30044 USA
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.
Any changes or modifications not expressly approved by the party responsible for compliance could void
the user’s authority to operate this equipment.

United States FCC Compliance
x ii OL-30505-01
RF Exposure Statements
Note: 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 equipment should be installed and operated with a
minimum distance of 7.9 inches (20 cm) between the radiator and your body. For
products available in the USA/Canada market, only channels 1-11 can be operated. The
selection of other channels is not possible.
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 FCCDSL_Domestic

CE Compliance
OL-30505-01 x iii
CE Compliance
Declaration of Conformity with Regard to the EU Directive 1999/5/EC
(R&TTE Directive)
This declaration is only valid for configurations (combinations of software, firmware and
hardware) supported or provided by Cisco Systems for use within the EU. The use of
software or firmware not supported or provided by Cisco Systems may result in the
equipment no longer being compliant with the regulatory requirements.

CE Compliance
x iv OL-30505-01
Note: The full declaration of conformity for this product can be found at
http://www.cisco.com/web/co nsumer/support/compliance_info.htm l.
The following standards were applied during the assessment of the product against the
requirements of the Directive 1999/5/EC:
 Radio: EN 300 328
 EMC: EN 301 489-1 and EN 301 489-17
 Safety: EN 60950 and EN 50385
The CE mark and class-2 identifier are affixed to the product and its packaging. This product
conforms to the following European directives:
-1999/5/EC
National Restrictions
This product is for indoor use only.
USA/Canada
This system has been evaluated for RS-210. When operating this system, adhere to the
following requirements:
 When operating in the band 5150-5250 MHz, the device is only for indoor use to reduce
the potential for harmful interference to co-channel mobile satellite systems.
 The maximum antenna gain permitted for devices in the bands 5250-5350 MHz and 5470-
5725 MHz shall comply with the EIRP limit.
 The maximum antenna gain permitted for devices in the band 5725-5825 MHz shall
comply with the EIRP limits specified for point-to-point and non point-to-point
operation as appropriate.
 Users should also be advised that high-power radars are allocated as primary users (i.e.
priority users) of the bands 5250-5350 MHz and 5650-5850 MHz and that these radars
could cause interference and/or damage to LE-LAN devices.
 Operation in the 5600- 5650 MHz band in the US is not permitted at this time to avoid
interference with Terminal Doppler Weather Radar systems operated by the FAA. This
requirement is applicable to systems installed indoors or outdoors. Note: Industry
Canada also restricts operation of this band per RSS-210. Systems being installed
outdoors are subject to the following restrictions:
a Systems must be professionally installed by trained qualified engineer or technicians.
b Systems must be installed per the recommended guidelines in the installation guide
for the outdoor systems.
c The use of non-approved Cisco antennas or unauthorized modifications could affect
the operation of the system and result in interference to the TDWR and as such the
operator could be held liable for such interference.

CE Compliance
OL-30505-01 xv
Ce système a été évalué pour les normes radioélectriques RS-210. Lorsque vous exploitez ce
système, respectez les exigences listées ci-dessous.
 Quand l'appareil est exploité dans la bande 5150-5250 MHz, il peut uniquement être
utilisé à l'intérieur pour réduire le risque de brouillage préjudiciable qui pourrait affecter
les systèmes satellites portables sur la même voie.
 Le gain d'antenne maximal permis dans le cas des appareils utilisant les bandes 5250-
5350 MHz et 5470-5725 MHz doit être conforme à la limite PIRE (EIRP).
 Le gain d'antenne maximal permis dans le cas des appareils utilisant la bande 5725-5825
MHz doit être conforme aux limites PIRE (EIRP) précisées pour les activités point à point
et non point à point, le cas échéant.
 Les utilisateurs doivent aussi savoir que les radars haute puissance sont les utilisateurs
principaux (c.-à-d. les utilisateurs prioritaires) des bandes 5250-5350 MHz et 5650-5850
MHz et que ces appareils sont susceptibles de causer des parasites ou des dommages aux
dispositifs LE-LAN.
 Le fonctionnement en 5600 - bande 5650 MHz aux Etats-Unis n'est pas autorisée à ce
moment pour éviter les interférences avec Doppler systèmes radar météorologiques
terminal exploité par la FAA. Cette exigence est applicable aux systèmes à l'intérieur ou à
l'extérieur installés. Note: Industrie Canada procède également à l'exploitation de cette
bande par RSS-210. Systèmes étant installés à l'extérieur sont soumis aux restrictions
suivantes:
a Les systèmes doivent être installés professionnellement par l'ingénieur ou technicien
formé et qualifié.
b Les systèmes doivent être installés selon les directives recommandées dans le guide
d'installation pour les systèmes extérieurs.
c L'utilisation d'antennes non approuvées par Cisco ou modification non autorisée
pourrait affecter le fonctionnement du système et entraîner des interférences dans la
TDWR et en tant que telle l'opérateur peut être tenu pour responsable de cette
atteinte.
France
For 2.4 GHz, the output power is restricted to 10 mW EIRP when the product is used
outdoors in the band 2454 - 2483.5 MHz. There are no restrictions when used in other parts of
the 2.4 GHz band. Check http://www.arcep.fr/ for more details.
Pour la bande 2,4 GHz, la puissance est limitée à 10 mW en p.i.r.e. pour les équipements
utilisés en extérieur dans la bande 2454 - 2483,5 MHz. Il n'y a pas de restrictions pour des
utilisations dans d'autres parties de la bande 2,4 GHz. Consultez http://www.arcep.fr/ pour
de plus amples détails.
Italy
This product meets the National Radio Interface and the requirements specified in the
National Frequency Allocation Table for Italy. Unless this wireless LAN product is operating
within the boundaries of the owner's property, its use requires a “general authorization.”
Please check http://www.comunicazioni.it/it/ for more details.

CE Compliance
x vi OL-30505-01
Questo prodotto è conforme alla specifiche di Interfaccia Radio Nazionali e rispetta il Piano
Nazionale di ripartizione delle frequenze in Italia. Se non viene installato all 'interno del
proprio fondo, l'utilizzo di prodotti Wireless LAN richiede una “Autorizzazione Generale”.
Consultare http://www.comunicazioni.it/it/ per maggiori dettagli.
Latvia
The outdoor usage of the 2.4 GHz band requires an authorization from the Electronic
Communications Office. Please check http://www.esd.lv for more details.
2,4 GHz frekvenču joslas izmantošanai ārpus telpām nepieciešama atļauja no Elektronisko
sakaru direkcijas. Vairāk informācijas: http://www.esd.lv.
Note: The regulatory limits for maximum output power are specified in EIRP. The EIRP level
of a device can be calculated by adding the gain of the antenna used (specified in dBi) to the
output power available at the connector (specified in dBm).
Antennas
Use only the antenna supplied with the product.
20110311_CE_Gateway

OL-30505-01 1
Purpose
This guide covers the following product model:
 DPC3940 DOCSIS Wireless Residential Voice Gateway
All features described in this guide are standard to these models of
residential gateways unless otherwise noted. For the purpose of this
guide, whenever a feature or option applies to only a specific model,
the model number is specified. If a model number is not specified,
then the feature or option applies to both of the models.
Audience
This guide is written for the home subscriber.
Document Version
This is the first formal release of this document.
1 Chapter 1
Introducing the DOCSIS
Wireless Residential Voice
Gateway
In This Chapter
 Introduction ..........................................................................................2
 What's In the Carton?...........................................................................3
 Front Panel Description .......................................................................5
 Back Panel Description ........................................................................7

Chapter 1 Introducing the DOCSIS Wireless Residential Voice Gateway
2 OL-30505-01
Introduction
Your new Cisco®Model DPC3940 DOCSIS®3.0 Wireless Residential Gateway with
Embedded Digital Voice Adapter meets industry standards for high-speed data
connectivity along with reliable digital telephone service. The residential gateway
delivers data, voice and wired (Ethernet) or wireless gateway capabilities to connect
a variety of devices in the home or small office and support high-speed data access
and cost-effective voice services, all in one device.
This guide provides procedures and recommendations for installing, operating, and
troubleshooting your residential gateway for high-speed Internet and digital
telephone service for your home or office. Contact your service provider for more
information about subscribing to these services.
Your new residential gateway offers the following outstanding benefits and features:
 Compliant with DOCSIS 3.0, 2.0, and 1.x standards along with PacketCable™
and EuroPacketCable™ specifications to deliver high-end performance and
reliability
 High performance broadband Internet connectivity to energize your online
experience
 Two-line embedded digital voice adapter for wired telephony service
 Four 1000/100/10BASE-T Ethernet ports to provide wired connectivity
 802.11n Wireless Access Point
 User configurable Parental Control blocks access to undesirable Internet sites
 Advanced firewall technology deters hackers and protects the home network
from unauthorized access
 Attractive compact design that allows for vertical, horizontal, or wall-mounted
operation
 Color-coded interface ports and corresponding cables simplify installation and
setup
 DOCSIS-5 compliant LED labeling and behavior provides a user and technician
friendly method to check operational status and act as a troubleshooting tool
 Allows automatic software upgrades by your service provider