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Chapter 4: Additional Information
64
Illustrations contained in this document are for representation only.
General Troubleshooting
You can correct most problems you have with your product by consulting the troubleshooting list that
follows.
I can’t access the internet.
Check all connections to your Wireless Gateway.
Your Ethernet card may not be working
. Check each product’s documentation for more
information.
The Network Properties of your operating system may not be installed correctly or the settings
may be incorrect. Check with your ISP or cable company.
I can’t get the modem to establish an Ethernet
connection.
Even new computers don’t always have Ethernet capabilities –
be sure to verify that your
computer has a properly installed Ethernet card and the driver software to support it.
Check to see that you are using the right type of Ethernet cable.
T
he modem won’t register a cable connection.
If the modem is in Initialization Mode, the INTERNET light will be flashing. Call your Cable
Company if it has not completed this 5-step process within 30 minutes, and note which step it is
getting stuck on.
The modem should work with a standard RG-
6 coaxial cable, but if you’re using a cable other
than the one your Cable Company recommends, or if the terminal connections are loose, it may
not work. Check with your Cable Company to determine whether you’re using t
he correct
cable.
If you subscribe to video service over cable, the cable signal may not be reaching the modem.
Confirm that good quality cable television pictures are available to the coaxial connector you
are using by connecting a television to it. If yo
ur cable outlet is ―dead‖, call your Cable
Company.
Verify that the Cable Modem service is EURO-DOCSIS compliant by calling your cable
provider.
For more Usage and Troubleshooting Tips use the web site links provided on the CD-ROM:
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Page 72 / 76
Chapter 4: Additional information
Illustrations contained in this document are for representation only.
65
FCC Declaration of Conformity and Industry Canada Information
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Trade Name:
Model: TCW770
Equipment Classification:
Computing Device Accessory
Responsible Party:
Thomson Inc.
101 W 103rd Street
Indianapolis, IN 46290
Telephone
317-415-4151
This equipment 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 harmful
interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, 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 and 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 this equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
FCC regulations state that unauthorized changes or modifications to this equipment may void the user’s
authority to operate it.
This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment
Regulations.
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Chapter 4: Additional Information
66
Illustrations contained in this document are for representation only.
Service Information
If you purchased or leased your Wireless Gateway directly from your cable company, then warranty
service for the Digital Cable Modem may be provided through your cable provider or its authorized
representative. For information on 1) Ordering Service, 2) Obtaining Customer Support, or 3) Additional
Service Information, please contact your cable company. If you purchased your Wireless Gateway from a
retailer, see the enclosed warranty card.
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Chapter 4: Additional information
Illustrations contained in this document are for representation only.
67
Glossary
10BaseT
–
Unshielded, twisted pair cable with an RJ-45 connector, used with Ethernet LAN (Local Area
Network). ―10‖ indicates speed (10 Mbps), ―Base‖ refers to baseband technology, and ―T‖ means twiste
d
pair cable.
Authentication -
The process of verifying the identity of an entity on a network.
DHCP (Dynamic Host Control Protocol)
–
A protocol which allows a server to dynamically assign IP
addresses to workstations on the fly.
Ethernet card
–
A plug-in circuit board installed in an expansion slot of a personal computer. The
Ethernet card (sometimes called a Network Interface Card or NIC) takes parallel data from the computer,
converts it to serial data, puts it into a packet format, and sends it over the 10BaseT or 100BaseT LAN
cable.
EURO-DOCSIS (Data Over Cable Service Interface Specifications)
–
A project with the objective of
developing a set of necessary specifications and operations support interface specifications for Cable
Modems and associated equipment.
F Connector
–
A type of coaxial connector, labeled CABLE IN on the rear of the Wireless Gateway, that
connects the modem to the cable system.
HTTP (HyperText Transfer Protocol)
–
Invisible to the user, HTTP is used by servers and clients to
communicate and display information on a client browser.
Hub
–
A device used to connect multiple computers to the
Wireless Gateway.
IP Address
–
A unique, 32-bit address assigned to every device in a network. An IP (Internet Protocol)
address has two parts: a network address and a host address. This modem receives a new IP address from
your cable operator via DHCP each time it goes through Initialization Mode.
Key exchange
- The swapping of mathematical values between entities on a network in order to allow
encrypted communication between them.
MAC Address
–
The permanent ―identity‖ for a device programmed into the Media Access Control layer
in the network architecture during the modem’s manufacture.
Network Driver
–
A file that is loaded on the computer to allow the computer to recognize the Ethernet
card or USB port
NID
- Network Interface Device, the interconnection between the internal house telephone wiring and a
conventional telephone service provider’s equipment. These wiring connections are normally house
d in a
small plastic box located on an outer wall of the house. It is the legal
demarcation between the
subscriber’s property and the service provider’s property.
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Chapter 4: Additional Information
68
Illustrations contained in this document are for representation only.
TCP/IP (Transmission Control Protocol/Internet Protocol)
–
A networking protocol that provides
communication across interconnected networks, between computers with diverse hardware architectures
and various operating systems.
TFTP
-
Trivial File Transfer Protocol, the system by which the Media Terminal Adapter’s configuration
data file is downloaded.
Xpress Technology
- One of the popular performance-enhancing WiFi technologies, designed to improve
wireless network efficiency and boost throughput. It is more efficient in mixed environments, and it can
work with 802.11a/b/g networks.
Please do not send any products to the Indianapolis address listed in this manual or on the carton. This
will only add delays in service for your product.
Thomson Inc.
101 W 103rd Street
Indianapolis, IN 46290
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