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.