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Cleaning Instructions
Clean the Telephony Gateway using only a clean, slightly moistened, cloth. Do not
use aerosols in the vicinity of the Telephony Gateway.
Factors Affecting Wireless Range
A number of factors can affect the usable range for wireless connections.
Note:
Decreasing the range of your wireless network may be beneficial, as long
as the decreased range is sufficient for your needs. By limiting your net-
work’s range, you reduce interference with other networks and make it
harder for unwant ed users to find and connect to your network.
Note:
Setting the trasmit power level to High increases the range. Setting it
to Medium or Low decreases the range proportionately.
Increases range:
Raising the unit above the devices (for example, in-
stalling the Telephony Gateway in the upper floor of a
multi-story dwelling)
Adding a wireless extender to the network
Decreases range:
Lowering the unit below the devices (for example, in-
stalling the Telephony Gateway in a basement)
Metal or concrete walls between the Telephony Gate-
way and other devices
Large metal appliances, aquariums, or metal cabinets
between the Telephony Gateway and other devices
Interference and RF noise (2.4 GHz wireless phones,
microwave ovens, or other wireless networks)
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
21
Page 22 / 44
Connecting the Telephony Gateway
WARNING
Risk of injury or equipment damage
Connecting the Telephony Gateway to the home’s existing telephone
wiring should only be performed by a professional installer. Physical con-
nections to the previous telephone provider must be removed and the
wiring must be checked; there must not be any voltage. Cancellation of
telephone service is not adequate. Failure to do so may result in loss of
service and/or permanent damage to the Telephony Gateway.
1
Connect one end of the coax cable to the cable outlet or splitter, and the
other end to the Telephony Gateway’s Cable connector (
F
). Tighten the con-
nections by hand, then tighten an additional 1/8 turn with a wrench.
Note
: For best performance, use high-quality coax cable and minimize or
eliminate splitters between the cable jack and the Telephony Gateway.
2
Insert the plug from the power cord into the Power connector on the back
of the Telephony Gateway (
H
) and insert the power cord into a convenient
AC outlet.
The Power light on the front of the Telephony Gateway lights up, then flashes
once (refer to the LED tables shown in Using the Telephony Gateway). See
Troubleshooting
if the Power light does not turn on.
3
Connect one end of the Ethernet cable to any Ethernet port on the back of
the Telephony Gateway, (
E
) and the other end to the Ethernet port on a
com puter, hub, or broadband router.
Note
: If you are connecting to a computer or an Ethernet hub with a cross-
over switch, use a straight-through cable.
4
Connect one end of the telephone cable to the telephone port on the back
of the Telephony Gateway (
C
or
D
). Connect the other end to the telephone.
Home Alarm Connection
The Alarm port (
D
) is for use with an analog home alarm system or for a sec-
ond phone line. Only a trained professional (Comcast or alarm installer)
should use this port.
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
22
Reset
USB
Tel
Tel 1
Alarm/Tel2
1
2
3
4
Ethernet
Cable
Power
B
E
C
A
D
F
H
G
Page 23 / 44
Configuring Your Wireless Connection
The TG1682 ships with a secure SSID that is unique for every device. Wi-Fi network
information is located on the side panel label. If your computer is equipped with a
802.11a/b/g/n/ac wireless LAN card, you may wish to configure the Telephony
Gateway’s wireless settings.
Note:
At a minimum, you should set a login password and set up wire-
less security.
Refer to the separate wireless configuration documenta-
tion for complete instructions on configuring your wireless connection.
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
23
Network
Names
(SSIDs)
Password
Page 24 / 44
Configuring Your Ethernet Connection
If your computer is equipped with a LAN card providing an Ethernet connection,
you may have to configure your computer’s TCP/IP settings. The steps that follow
will guide you through setting your computer’s TCP/IP settings to work with the
Telephony Gateway.
Requirements
Make sure you have the following before attempting to configure your Ethernet con-
nection:
Computer with:
one of: Windows XP, Windows Vista, Windows 7, Windows 8, or MacOS
X
Ethernet interface
Ethernet cable (supplied)
IP address, subnet, gateway, and DNS information for installations not using
DHCP
How to use this chapter
The following list shows the procedures for modifying the TCP/IP settings on the
computer. The procedure is slightly different depending on the operating system
that you are using. Please ensure you are using the correct steps for the operating
system on your computer. Follow the links below for instructions to configure your
Ethernet connection on your operating system.
TCP/IP Configuration for Windows XP
TCP/IP Configuration for Windows Vista
TCP/IP Configuration for Windows 7 or Windows 8
TCP/IP Configuration for MacOS X
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
24
Page 25 / 44
TCP/IP Configuration for Windows XP
Follow these steps to configure the Ethernet interface on a Windows XP operating
system.
TCP/IPv6 Note:
This procedure shows the configuration of TCP/IPv4. TCP/IPv6
is not installed or enabled by default in Windows XP. If your cable
provider requires TCP/IPv6 you must first install and enable it on your
Windows XP system. Refer to Microsoft support materials on Windows
XP for installation instructions. Once installed and enabled, follow this
same configuration example, but select TCP/IPv6 at the appropriate
step.
Note
:
Dialog boxes shown on your computer may differ slightly from those
shown in this procedure.
1
From the computer, select
Start > Settings > Control Panel
and double-
click
Network Connections
in the Control Panel.
The Network Connection window displays a list of LAN connections and as-
sociated network adapters.
2
Double-click the local area connection to be used for your device’s network
connection.
The Local Area Connection Status widow displays.
3
Click
Properties
.
4
Select
TCP/IP
by clicking it one time. Then click
Properties
.
5
Click the
General
tab. Then click
Obtain an IP address automatically
and click
OK
.
6
Click
OK
to accept the new settings, and
OK
again to close the Properties
window.
7
You may have to restart your computer in order for your computer to obtain
a new IP address from the network.
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
25

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