THOMSON DCW775 User manual

User manual
SATELLITE TELECOM
CABLE TERRESTRIAL
DCW775 - Wireless Gateway

Chapter 1: Connections and Setup
i
Illustrations contained in this document are for representation only.
CAUTION
Disconnect power before
servicing.
CAUTION
To ensure reliable operation and to prevent
overheating, provide adequate ventilation for this
modem and keep it away from heat sources. Do
not locate near heat registers or other
heat-producing equipment. Provide for free air
flow around the Wireless Gateway and its power
supply.
NORTH AMERICAN CABLE INSTALLER:
This reminder is provided to call your attention to Article 820-40 of the National Electrical Code (Section 54
of the Canadian Electrical Code, Part 1) which provides guidelines for proper grounding and, in particular,
specifies that the cable ground shall be connected to the grounding system of the building as close to the
point of cable entry as practical.
This symbol means that your inoperative electronic appliance must be collected separately and
not mixed with the household waste. The European Union has implemented a specific collection
and recycling system for which producers are responsible.
This appliance has been designed and manufactured with high quality materials and components
that can be recycled and reused. Electrical and electronic appliances are liable to contain parts
that are necessary in order for the system to work properly but which can become a health and
environmental hazard if they are not handled or disposed of in the proper way. Consequently,
please do not throw out your inoperative appliance with the household waste.
If you are the owner of the appliance, you must deposit it at the appropriate local collection point
or leave it with the vendor when buying a new appliance.
- If you are a professional user, please follow your supplier's instructions.
- If the appliance is rented to you or left in your care, please contact your service provider.
Help us protect the environment in which we live !

Important Information
ii
Illustrations contained in this document are for representation only.
DOCSIS compliant
This product was designed according to Data over Cable Service Interface Specifications.
Operating Information
Operating Temperature: 0˚ C to 40˚ C (32˚ F ~ 104˚ F)
Storage Temperature: -20˚ C to 70˚ C (-4˚ F ~ 158˚ F)
If you purchased this product at a retail outlet, please read the following:
Product Information
Keep your sales receipt to obtain warranty parts and service and for proof of purchase. Attach it here and
record the serial and model numbers in case you need them. The numbers are located on the back of the
product.
Model No. ____________________________Serial No ________________________________
Purchase Date: ________________________Dealer/Address/Phone: _________________________

List of Figures
Illustrations contained in this document are for representation only.
iii
Chapter 1: Connections and Setup...................................................................................................................... 2
Introduction......................................................................................................................................................... 2
Wireless Gateway Features.......................................................................................................................... 2
What’s on the CD-ROM.............................................................................................................................. 2
DOCSIS is trademarks of Cable Television Laboratories, Inc................................................................... 3
Computer Requirements.............................................................................................................................. 3
Wall Mounting ............................................................................................................................................. 4
Wireless Gateway DCW775 Overview................................................................................................................ 5
Front Panel................................................................................................................................................... 5
Rear Panel.................................................................................................................................................... 7
Side Panel..................................................................................................................................................... 7
Relationship among the Devices.......................................................................................................................... 8
What the Modem Does................................................................................................................................. 8
What the Modem Needs to Do Its Job......................................................................................................... 8
Contact Your Local Cable Company .......................................................................................................... 8
Connecting the Wireless Gateway to a Single Computer ................................................................................. 10
Attaching the Cable TV Wire to the Wireless Gateway ........................................................................... 10
Important Connection Information........................................................................................................... 11
Ethernet Connection to a Computer ......................................................................................................... 11
Connecting More Than One Computer to the Wireless Gateway............................................................ 12
Turning on the Wireless Gateway ..................................................................................................................... 13
Chapter 2: WEB Configuration ........................................................................................................................ 14
Accessing the Web Configuration ..................................................................................................................... 14
Outline of Web Manager ........................................................................................................................... 15
Status.................................................................................................................................................................. 16
1. Software.................................................................................................................................................. 16

List of Figures
iv
Illustrations contained in this document are for representation only.
2. Connection.............................................................................................................................................. 17
3. Password................................................................................................................................................. 18
4. Diagnostics.............................................................................................................................................. 19
5. Event Log ............................................................................................................................................... 20
6. Switch Mode........................................................................................................................................... 20
7. Backup/Restore ................................................................................................................................ 21
Network.............................................................................................................................................................. 22
1. LAN........................................................................................................................................................ 22
2. WAN....................................................................................................................................................... 23
3. Computers.............................................................................................................................................. 24
4. DDNS .................................................................................................................................................... 25
5. Time...................................................................................................................................................... 26
Advanced ........................................................................................................................................................... 27
1. Options ................................................................................................................................................... 27
2. IP Filtering ............................................................................................................................................. 28
3. MAC Filtering........................................................................................................................................ 29
4. Port Filtering.......................................................................................................................................... 30
5. Forwarding............................................................................................................................................. 31
6. Port Triggers.......................................................................................................................................... 32
7. DMZ Host ............................................................................................................................................ 33
8. RIP (Routing Information Protocol) Setup........................................................................................... 34
Firewall .............................................................................................................................................................. 35
1. Web Filtering.......................................................................................................................................... 35
2. TOD Filtering......................................................................................................................................... 36
3. Local Log and Remote Log.................................................................................................................... 37
Parental Control ................................................................................................................................................ 38

List of Figures
Illustrations contained in this document are for representation only.
v
1. Basic........................................................................................................................................................ 38
Wireless.............................................................................................................................................................. 39
1.802.11/ Radio .......................................................................................................................................... 40
2. 802.11/ Primary Network....................................................................................................................... 42
3. Access Control........................................................................................................................................ 49
4. Bridging.................................................................................................................................................. 50
5. 802.11 QoS (WMM) Settings ................................................................................................................. 51
Chapter 3: Networking...................................................................................................................................... 53
Communications ........................................................................................................................................ 53
Type of Communication ............................................................................................................................ 53
Cable Modem (CM) Section ...................................................................................................................... 54
Networking Section.................................................................................................................................... 54
Three Networking Modes .......................................................................................................................... 55
Cable Modem (CM) Mode......................................................................................................................... 55
Residential Gateway (RG) Mode............................................................................................................... 57
CableHome (CH) Mode ............................................................................................................................. 58
MAC and IP Addresses Summary............................................................................................................. 60
Chapter 4:Additional Information................................................................................................................... 61
Frequently Asked Questions...................................................................................................................... 61
General Troubleshooting ........................................................................................................................... 63
FCC Declaration of Conformity and Industry Canada Information ....................................................... 64
Service Information........................................................................................................................................... 65
Glossary ............................................................................................................................................................. 66

Chapter 1: Connections and Setup
2
Illustrations contained in this document are for representation only.
Chapter 1: Connections and Setup
Introduction
Wireless Gateway Features
CableLabs DOCSIS 1.0/1.1/2.0/3.0 Standard Compliant
4 x Standard RJ-45 connector for 10/100/1000 BaseT Ethernet with auto-negotiation and MDIX
functions; Support maximum Ethernet cable length up to 100m (Category 5)
1 x Master USB connector socket comply to USB2.0
WIFI interface 802.11n; 2,4GHz or 5 GHz with at least 2x2 antennas.
Transparent bridging for IP traffic
Transparent bridging between CPE and RF interface
Transparent bridging between Ethernet and USB interface when USB is populated on the board
RSAand 56 bit DES data encryption security
SNMP network management support
Remote operating firmware downloading
Support Web pages and private DHCP server for status monitoring
MPEG over IP encapsulation
Power management
Network Protocol: IP/TCP/UDP/ARP/ICMP/DHCP/FTP/TFTP/SNMP/HTTP
Syslog (remote)
Event Log (local)
Clear LED display
Reset switch in order to restore factory parameters
Two detachable SMA antennas connectors (optional)
What’s on the CD-ROM
Insert the Wireless Gateway CD-ROM into your CD-ROM drive to view troubleshooting tips, the
internal diagnostics, and other valuable information.
CD-ROM Contents:
Electronic copy of this user’s guide in additional languages (PDF format)
Adobe Acrobat Reader —application you can load to read PDF format, if you don’t have it
loaded already
Links to Thomson web site

Chapter 1: Connections and Setup
Illustrations contained in this document are for representation only.
3
DOCSIS is trademarks of Cable Television Laboratories, Inc.Computer Requirements
For the best possible performance from your Wireless Gateway, your personal computer must meet the
following minimum system requirements (note that the minimum requirements may vary by cable
companies):
IBM PC COMPATIBLE
MACINTOSH**
CPU
Pentium preferred
PowerPC or higher
System RAM
16MB (32MB preferred)
24MB (32MB preferred)
Operating System
Windows*
NT/2000/Me/XP/Vista, Linux
Mac OS** 7.6.1 or higher
Video
VGA or better (SVGApreferred)
VGA or better (SVGAbuilt-in
preferred)
Ethernet
10 /100 /1000 Base-T
10 /100 /1000 Base-T
An Ethernet card makes it possible for your computer to pass data to and
from the internet. You must have an Ethernet card and software drivers
installed in your computer. You will also need a standard Ethernet cable to
connect the Ethernet card to your Wireless Gateway.
Software
ATCP/IP network protocol for each machine
Microsoft Internet Explorer 4.0 or later or Netscape Navigator 4.0 or
later. (5.0 and 4.7 or later, respectively, are strongly recommended.)
* Windows is a trademark of Microsoft Corporation.
** Macintosh and the Mac OS are trademarks of Apple Computer, Inc.

Chapter 1: Connections and Setup
4
Illustrations contained in this document are for representation only.
Wall Mounting
Number of screws: 2 pieces.
Direction for wall mounting: Tuner downward or leftward or rightward
Dimension for the screw: 3.5 mm; length: 10 mm.
There are 2 slots on the underside of the WIRELESS GATEWAY that can be used for wall mounting.
Note: When wall mounting the unit, ensure that it is within reach of the power outlet.
To do this:
1. For THE WIRELESS GATEWAY, ensure that the wall you use is smooth, flat, dry and sturdy and
use the 2 screws holes
2. The unit can be to use solid concrete wall and/or hard wood wall

Chapter 1: Connections and Setup
Illustrations contained in this document are for representation only.
5
Wireless Gateway DCW775 Overview
Front Panel
The following illustration shows the front panel of the DCW775:
Reset Button behavior
a) Push and hold the button between 0 and 5 seconds Reboot the device
b) Between 6 and 10 seconds Display the channel bonding status for DS and US
Note: This is the same as the above Channel Bonding display after the registration
c) After 11 seconds Perform the factory reset.
WPS LED is a backlight in WPS button
d) When WiFi is on, the LED is blinking
e) When WPS association is on, the LED is turned on

Chapter 1: Connections and Setup
6
Illustrations contained in this document are for representation only.
The LEDs on the front panel are described in the table below (from left to right):
DCW775
Power
Internet
Ethernet
USB
Wireless
Description
DS
US
Online
1
2
3
4
Boot-up
Operation
ON
ON
ON
ON
ON
ON
ON
ON
X
X
Power on 0.25 sec
X
FLASH
FLASH
FLASH
X
X
X
X
X
X
From power ON to system initialization
complete
DOCSIS Start-up
Operation
ON
FLASH
OFF
OFF
X
X
X
X
X
X
During DS scanning and acquiring SYNC
ON
ON
FLASH
OFF
X
X
X
X
X
X
From SYNC completed, receiving UCD to ranging
completed
ON
ON
ON
FLASH
X
X
X
X
X
X
During DHCP, configuration file download,
registration, and Baseline Privacy initialization
ON
ON
ON
ON
X
X
X
X
X
X
Operational (NACO=ON)
ON
FLASH
FLASH
OFF
X
X
X
X
X
X
Operational (NACO=OFF)
Channel Bonding
Operation
FLASH
FLASH
FLASH
FLASH
X
X
X
X
X
X
Wait registration with all DS and all US –Lights
Flash sequentially from the right to left
Minimum duration 3 seconds
X
X
X
X
X
X
X
X
X
X
From 1 to 4 DS, from 1 to 4 LEDs are ON.
From 5 to 8 DS, From 1 to 4 LEDs are flashing
Duration 3 seconds
OFF
X
X
OFF
X
X
X
X
X
X
From 1 to 2 US, from 1 to 2 LEDs are ON.
From 3 to 4 US, From 1 to 2 LEDs are flashing
Duration 3 seconds.
FLASH
FLASH
FLASH
FLASH
X
X
X
X
X
X
Wait registration with all DS and all US –Lights
Flash sequentially from the left to right
Minimum duration 3 seconds
CPE Operation
ON
X
X
X
OFF
OFF
OFF
OFF
X
X
No Ethernet Link
ON
ON
ON
ON
Ethernet Link
FLASH
FLASH
FLASH
FLASH
TX/RX Ethernet Traffic
ON
X
X
X
X
X
X
X
X
OFF
Wireless is disable
ON
Wireless initiate success or enable
FLASH
TX/RX Wireless Traffic
USB Operation
ON
X
X
X
X
X
X
X
OFF
X
No USB Link
ON
USB Link
FLASH
TX/RX USB Traffic
SW Download
Operation
ON
FLASH
FLASH
ON
X
X
X
X
X
X
A software download and while updating the
FLASH memory

Chapter 1: Connections and Setup
Illustrations contained in this document are for representation only.
7
Rear Panel
4 x GIGAETHERNET: Ethernet 10/100/1000BaseT RJ-45 connector
USB : USB 2.0 host connector
RESET: Reset CM
CABLE: F-Connector
12VDC: DC power socket
Side Panel
1 x WPS button with LED

Chapter 1: Connections and Setup
8
Illustrations contained in this document are for representation only.
Relationship among the Devices
What the Modem Does
The Wireless Gateway provides high-speed Internet access as well as cost-effective fax/modem services
over residential, commercial, and education subscribers on public and private networks via an existing
CATV infrastructure. The IP traffic can transfer between the Wireless Gateway and DOCSIS compliant
headend equipment. The data security secures upstream and downstream communications.
What the Modem Needs to Do Its Job
The Right Cable Company: Make sure your local cable company provides data services that use
cable TV industry-standard DOCSIS compliant technology.
Contact Your Local Cable Company
You will need to contact your cable company to establish an Internet account before you can use your
gateway. You should have the following information ready (which you will find on the sticker on the
gateway):
The serial number
The model number
The Cable Modem (CM) Media Access Control (MAC) address
SSID, WEP/WPA-PSK information

Chapter 1: Connections and Setup
Illustrations contained in this document are for representation only.
9
Please verify the following with the cable company
The cable service to your home supports DOCSIS compliant two-way modem access.
You have a cable outlet near your PC and it is ready for Cable Modem service.
Note: It is important to supply power to the modem at all times. Keeping your modem plugged in will
keep it connected to the Internet. This means that it will always be ready whenever you need.
Important Information
Your cable company should always be consulted before installing a new cable outlet. Do not attempt any
rewiring without contacting your cable company first.

Chapter 1: Connections and Setup
10
Illustrations contained in this document are for representation only.
Connecting the Wireless Gateway to a Single Computer
This section of the manual explains how to connect your Wireless Gateway to the Ethernet port on your
computer and install the necessary software. Please refer to Figure 1 to help you connect your Digital
Cable Modem for the best possible connection.
Attaching the Cable TV Wire to the Wireless Gateway
1. Locate the Cable TV wire. You may find it one of three ways:
a. Connected directly to a TV, a Cable TV converter box, or VCR. The line will be connected to
the jack which should be labeled either IN, CABLE IN, CATV, CATV IN, etc.
b. Connected to a wall-mounted cable outlet.
c. Coming out from under a baseboard heater or other location. See Figure 1 for the wiring
example.
Notes: For optimum performance, be sure to
connect your Wireless Gateway to the first point
the cable enters your home. The splitter must be
rated for at least 1GHz.
Fig. 1: Basic Home Wiring

Chapter 1: Connections and Setup
Illustrations contained in this document are for representation only.
11
Important Connection Information
The Wireless Gateway supports 4 Ethernet connections simultaneously.
Below are important points to remember before you connect the Wireless Gateway.
Ethernet Connection to a Computer
Make the connection to the modem in the following sequence:
1. Connect one end of the coaxial cable to the cable connection on the wall, and the other end to the
CABLE jack on the Wireless Gateway.
2. Connect the plug from the DC power supply into the POWER DC ADAPTER jack on the Cable
Wireless Gateway, and plug the power supply into a DC outlet.
Note: Use only the power supply that accompanied this unit. Using other adapters may damage the unit.
3. Connect one end of the Ethernet cable (straight-wired, see below) to the Ethernet port on the back of
your computer, and the other end to the ETHERNET port on the Wireless Gateway.
Make sure that the Ethernet cable is straight-wired (not “null” or crossover-wired). However, you
will need a crossover-type cable if you are connecting the modem to a hub, or a hub within a port
switch that provides the same function.
Fig.2: Ethernet Connection

Chapter 1: Connections and Setup
12
Illustrations contained in this document are for representation only.
Connecting More Than One Computer to the Wireless Gateway
If you need to connect more than one computer to DCW775, simply connect the computers to the
Ethernet ports on the rear panel. You may also use a hub with an crossover Ethernet cable to connect
more than 4 computer to the Wireless Gateway.
Fig.3: Multiple-PC Connection
Note: You may need to check with your service provider in order to connect multiple computers.

Chapter 1: Connections and Setup
Illustrations contained in this document are for representation only.
13
Turning on the Wireless Gateway
After installing the Wireless Gateway and turn it on for the first time (and each time the modem is
reconnected to the power), it goes through several steps before it can be used. Each of these steps is
represented by a different pattern of flashing lights on the front of the modem.
Note: All indicators flash once before the initialization sequence.
If all of the lights are flashing sequentially, it means the Wireless Gateway is automatically updating its
system software. Please wait for the lights to stop flashing. You cannot use your modem during this time.
Do not remove the power supply or reset the Wireless Gateway during this process.

Chapter 2: WEB Configuration
14
Illustrations contained in this document are for representation only.
Chapter 2: WEB Configuration
To make sure that you can access the Internet successfully, please check the following first.
1. Make sure the Ethernet connection between the Wireless Gateway and your computer is OK.
2. Make sure the TCP/IP protocol is set properly.
3. Subscribe to a Cable Company.
Accessing the Web Configuration
The Wireless Gateway offers local management capability through a built in HTTP server and a number
of diagnostic and configuration web pages. You can configure the settings on the web page and apply
them to the device.
Once your host PC is properly configured; please proceed as follows:
1. Start your web browser and type the private IP address of the Wireless Gateway on the URL
field: 192.168.0.1.
2. After connecting to the device, you will be prompted to enter username and password. By
default, the username is ―‖ and the password is ―admin‖.
Fig. 4
If you login successfully, the main page will appear.

Chapter 2: WEB Configuration
Illustrations contained in this document are for representation only.
15
Outline of Web Manager
The main screen will be shown as below.
Fig. 5
Main Menu: the hyperlinks on the top of the page.
Title: the sidebar on the left side of the page indicates the title of this management interface, e.g.,
Software in this example
Main Window: the current workspace of the web management, containing configuration or status
information
For easy navigation, the pages are organized in groups, with group names main menu, individual page
names within each group are provided in the sidebar. To navigate to a page, click the group hyperlink at
the top, then the page title on the sidebar.
Your cable company may not support the reporting of some items of information listed on your gateway’s
internal web pages. In such cases, the information field appears blank. This is normal.