Cisco DPC3825 User manual

Cisco Model DPC3825 and EPC3825
8x4 DOCSIS 3.0 Wireless
Residential Gateway User Guide
In This Document
IMPORTANT SAFETY INSTRUCTIONS ...............................................................2
Introduction...............................................................................................................12
What's In the Carton?...............................................................................................14
Front Panel Description ...........................................................................................15
Back Panel Description ............................................................................................16
What Are the System Requirements for Internet Service?..................................18
How Do I Subscribe to High-Speed Internet Service?.........................................19
Where Is the Best Location for My DOCSIS Residential Gateway? ..................20
How Do I Mount the Modem on a Wall? (Optional)...........................................21
How Do I Connect My Gateway for Internet Service?........................................24
How Do I Configure My DOCSIS Residential Gateway?...................................26
Configure Wireless Settings ....................................................................................35
Configure Security....................................................................................................51
Control Access to the Gateway...............................................................................60
Configure Applications and Gaming.....................................................................69
Manage the Gateway................................................................................................75
Monitor Gateway Status ..........................................................................................84
Frequently Asked Questions...................................................................................91
Tips for Improved Performance .............................................................................95
Front Panel LED Status Indicator Functions.........................................................96
 Notices......................................................................................................................100

2 4021196 Rev B
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS
NoticetoInstallers
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’attentiondesinstallateursde réseauxcâblés
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.

4021196 Rev B 3
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.
Avisoa los instaladoresde sistemasCATV
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

4 4021196 Rev B
IMPORTANT SAFETY INSTRUCTIONS
IMPORTANTSAFETYINSTRUCTIONS
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.
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.

4021196 Rev B 5
IMPORTANT SAFETY INSTRUCTIONS
ProtecttheProductfromLightning
In addition to disconnecting the AC power from the wall outlet, disconnect the signal inputs.
Verifythe PowerSource fromtheOn/OffPowerLight
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.
EliminateACMainsOverloads
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.
Provide VentilationandSelecta 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 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.
ProtectfromExposuretoMoistureand 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.
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.

6 4021196 Rev B
IMPORTANT SAFETY INSTRUCTIONS
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.
20090915_Modem No Battery_Safety

IMPORTANT SAFETY INSTRUCTIONS
4021196 Rev B 7
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 Residential Gateway
Model: DPC3825/EPC3825
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.

IMPORTANT SAFETY INSTRUCTIONS
8 4021196 Rev B
DynamicFrequencySelection(DFS)DualBandFrequencies
Some configurations of this product may operate in the 5150-5250MHz and
5470-5725MHz bands. If you select a channel in these frequency ranges, the product is
restricted to indoor operation only per FCC guidance. The use of this product on the affected
frequencies when outside is in non-compliance of the FCC regulations and guidelines.
RadiationExposureStatements
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.
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 ANSI C 95.1
limits. The evaluation was based on evaluation per RSS-102 Rev 2. The minimum separation
distance from the antenna to general bystander is 7.9 inches (20 cm) to maintain compliance.
EU
This system has been evaluated for RF exposure for humans in reference to the ICNIRP
(International Commission on Non-Ionizing Radiation Protection) limits. The evaluation was
based on the EN 50385 Product Standard to Demonstrate Compliance of Radio Base Stations
and Fixed Terminals for Wireless Telecommunications Systems with basic restrictions or
reference levels related to Human Exposure to Radio Frequency Electromagnetic Fields from
300 MHz to 40 GHz. The minimum separation distance from the antenna to general
bystander is 20 cm (7.9 inches).
Australia
This system has been evaluated for RF exposure for humans as referenced in the Australian
Radiation Protection standard and has been evaluated to the ICNIRP (International
Commission on Non-Ionizing Radiation Protection) limits. The minimum separation distance
from the antenna to general bystander is 20 cm (7.9 inches).
20091016 FCC DSL_Dom and Intl

IMPORTANT SAFETY INSTRUCTIONS
4021196 Rev B 9
CE Compliance
DeclarationofConformitywithRegardto theEU Directive1999/5/EC
(R&TTEDirective)
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.

IMPORTANT SAFETY INSTRUCTIONS
10 4021196 Rev B
Note: The full declaration of conformity for this product can be found in the Declarations of
Conformity and Regulatory Information section of the appropriate product hardware
installation guide, which is available on Cisco.com.
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
NationalRestrictions
This product is for indoor use only.
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.
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.

IMPORTANT SAFETY INSTRUCTIONS
4021196 Rev B 11
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. 20090312 CE_Gateway

12 4021196 Rev B
Introduction
Introduction
Welcome to the exciting world of high-speed Internet service. Your new Cisco®
Model DPC3825 DOCSIS®3.0 or EPC3825 EuroDOCSIS™ Wireless Residential
Gateway is a cable modem that meets industry standards for high-speed data
connectivity. The DPC3825 and EPC3825 residential gateway delivers data 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, all in one device. With
a DPC3825 or EPC3825 residential gateway, your Internet enjoyment, home and
business communications, and personal productivity will surely soar.
This guide provides procedures and recommendations for placing, installing,
configuring, operating, and troubleshooting your DPC3825 and EPC3825 residential
gateway for high-speed Internet for your home or office. Refer to the appropriate
section in this guide for the specific information you need for your situation. Contact
your service provider for more information about subscribing to these services.
Benefitsand Features
Your new DPC3825 and EPC3825 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
Four 1000/100/10BASE-T Ethernet ports to provide wired connectivity
802.11n Wireless Access Point
Wireless Protected Setup (WPS), including a push button switch to activate WPS
for simplified and secure wireless setup
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

4021196 Rev B 13
Introduction
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

14 4021196 Rev B
What's In the Carton?
What's In the Carton?
When you receive your wireless 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 of the DOCSIS Residential
Gateway models (DPC3825 or
EPC3825)
One wall-mount style power adapter
(models requiring external power
supply)
OR
One desktop-style power adapter
(models requiring external power
supply)
One Ethernet cable (CAT5/RJ-45)
One CD-ROM
If any of these items are missing or damaged, please contact your service provider
for assistance.
Note: You will 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 wireless residential gateway.

4021196 Rev B 15
Front Panel Description
Front Panel Description
The front panel of your residential gateway provides LED status indicators that
indicate how well and at what state your residential gateway is operating. See Front
Panel LED Status Indicator Functions (on page 96), for more information on front
panel LED status indicator functions.
Model DPC3825 shown here
1POWER—ON, power is applied to the wireless residential gateway
2DS—ON, the wireless residential gateway is receiving data from the cable
network
3US—On, the wireless residential gateway is sending data to the cable
network
4ONLINE—ON, the wireless residential gateway is registered on the
network and fully operational
5ETHERNET 1 - 4—ON, a device is connected to one of the Ethernet ports.
BLINKING indicates that data is being transferred over the Ethernet
connection
6USB—ON, a device is connected to the USB port. BLINKING indicates that
data is being transferred over the USB connection
7WIRELESS LINK—ON, the Wireless Access Point is operational.
BLINKING indicates that data is being transferred over the wireless
connection. OFF indicates that the wireless access point has been disabled
by the user
8WIRELESS SETUP—OFF (normal condition) wireless setup is not active.
BLINKING indicates the user has activated wireless setup to add new
wireless clients on the wireless network

16 4021196 Rev B
Back Panel Description
Back Panel Description
The following illustrations show the description and function of the back panel
components on the Cisco DPC3825 residential gateway.
1POWER—Connects the residential gateway to the AC power adapter that is
provided with your residential gateway
CAUTION:
Avoid damage to your equipment. Only use the power supply
that is provided with your residential gateway.
2ON/OFF SWITCH (European models only)—Allows you to power of the
residential gateway without removing the power cord
3MAC ADDRESS LABEL—Displays the MAC address of the residential gateway
4USB—Connects to selected client devices
5ETHERNET—Four RJ-45 Ethernet ports connect to the Ethernet port on your PC
or your home network
6CABLE—F-connector connects to an active cable signal from your service
provider
7WIRELESS SETUP—Pressing this switch initiates wireless setup, this feature
allows the user to add new Wireless Protected Setup (WPS) compliant wireless
clients to the home network

4021196 Rev B 17
Back Panel Description
8RESET—A momentary pressing (1-2 seconds) of this switch reboots the EMTA.
Pressing the switch for more than ten seconds first causes a reset-to-factory-
default of all settings and then reboots the gateway
CAUTION:
The Reset button is for maintenance purposes only. Do not use
unless instructed to do so by your cable service provider. Doing
so may cause you to lose any cable modem settings you have
selected.

18 4021196 Rev B
What Are the System Requirements for Internet Service?
What Are the System Requirements for Internet Service?
To ensure that your residential gateway operates efficiently for high-speed Internet
service, verify that all of the Internet devices on your system meet or exceed the
following minimum hardware and software requirements.
Note: You will also need an active cable input line and an Internet connection.
MinimumSystemRequirementsforaPC
A PC with a Pentium MMX 133 processor or greater
32 MB of RAM
Web browsing software
CD-ROM drive
MinimumSystemRequirementsforMacintosh
MAC OS 7.5 or later
32 MB of RAM
SystemRequirementsforanEthernetConnection
A PC with Microsoft Windows 2000 operating system (or later) with TCP/IP
protocol installed, or an Apple Macintosh computer with TCP/IP protocol
installed
An active 10/100/1000BASE-T Ethernet network interface card (NIC) installed

4021196 Rev B 19
How Do I Subscribe to High-Speed Internet Service?
How Do I Subscribe to High-Speed Internet Service?
Before you can use your residential gateway, 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 options in this
section.
IDo NotHave aHigh-SpeedInternetAccessAccount
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 (CM MAC)
Other MAC address numbers as needed
These numbers appear on a bar code label located on the residential gateway. 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 CM MAC.
The following illustration shows a sample bar code label.
Write down these numbers in the space provided here.
Serial Number _______________________
MAC Address ________________________
IAlreadyHavean ExistingHigh-SpeedInternetAccessAccount
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 residential gateway.
Refer to the serial number and MAC address information listed previously in this
section.

20 4021196 Rev B
Where Is the Best Location for My DOCSIS Residential Gateway?
Where Is the Best Location for My DOCSIS Residential
Gateway?
The ideal location for your residential gateway 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 residential gateway. Read this
user guide thoroughly before you decide where to place your residential gateway.
Consider these recommendations:
Choose a location close to your computer if you will also use the residential
gateway for high-speed Internet service.
Choose a location that is near an existing RF coaxial connection to eliminate the
need for an additional RF coaxial outlet.
Choose a location that is relatively protected from accidental disturbance or
harm, such as a closet, basement, or other protected area.
Choose a location so that there is plenty of room to guide the cables away from
the modem without straining or crimping them.
Airflow around the residential gateway should not be restricted.
Read this user guide thoroughly before installing the residential gateway.