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Getting Started
About Your New Telephony Gateway
The Xfinity TG1682 Telephony Gateway is DOCSIS compliant with the following fea-
tures:
Speed: much faster than dialup or ISDN service; up to eight times faster
than DOCSIS 2.0 cable modems.
Convenience: supports Ethernet and 802.11a/b/g/n/ac wireless connec-
tions; both can be used simultaneously
Flexibility: provides two independent lines of telephone service as well as
high speed data
Compatibility:
Data services: DOCSIS 3.0 compliant and backward-compatible with
DOCSIS 2.0 or 1.1; supports tiered data services (if offered by your
cable company)
Telephony services: PacketCable™ 2.0 compliant
DECT support for CAT-iq 2.0 compliant DECT 6.0 hardware with multi
line calling capabilities (if offered by your cable company)
The TG1682 provides:
Wireless 802.11a/b/g/n/ac connectivity
Four Ethernet ports for connections to non-wireless devices
Up to two lines of telephone service with Digital Enhanced Cordless Telecom-
munications (DECT) funtionality
Integrated MoCA 2.0 home networking
DOCSIS 3.0 compliant with Li-Ion backup battery
Two USB host ports (future support for external USB devices)
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
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Coax Cable
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Configuration
Usage
Troubleshooting
Glossary
Xfinity TG1682 Telephony Gateway User’s Guide
What’s in the Box?
Make sure you have the following items before proceeding. Call your cable company
for assistance if anything is missing.
Telephony Gateway
Power Cord
Quick Installation Guide
End User License Agreement
Items You Need
If you are installing the Telephony Gateway yourself, make sure you have the fol-
low ing items on hand before continuing:
Telephony Gateway package
: see
What’s in the Box?
for a list of items
in the package.
Coaxial cable (coax)
: as shown in the image to the left, this is a round
cable with a connector on each end. It is the same kind of wire used to con-
nect to your television for cable TV. You can buy coax from any electronics
retailer and many discount stores; make sure it has connectors on both
ends. There are two types of connectors, slip-on and screw-on; the screw-
on connectors are best for use with your Telephony Gateway. The coax
should be long enough to reach from your Telephony Gateway to the near-
est cable outlet.
Note
: For best performance, use high-quality RG-6 type coax cable and mini-
mize or eliminate splitters between the cable jack and the Telephony Gateway.
Phone Cable
: as shown in the image to the left, this is a standard phone
cable with standard phone connectors (RJ11 type) on both ends. You can
buy phone cables from any electronics retailer and many discount stores.
Splitter (optional)
: provides an extra cable connection by splitting a sin-
gle outlet into two. You may need a splitter if you have a TV already con-
nected to the cable outlet that you want to use. You can buy a splitter from
any electronics retailer and most discount stores; you may also need a short
piece of coax cable (with connectors); use it to connect the splitter to the
cable outlet and then connect the Telephony Gateway and TV to the splitter.
Phone Cable
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Note
: A splitter effectively cuts the signal in half and sends each half to its
two outputs. Using several splitters in a line may deteriorate the quality of
your television, telephone, and/or internet connection.
Ethernet Cable(s)
: as shown in the image to the left, this is a Category 5e
(CAT5e) straight-through cable for connecting computers to the Gateway.
Information packet
: your cable company should furnish you with a packet
containing information about your service and how to set it up. Read this in-
formation carefully. Contact your cable company if you have any ques t
ions.
Getting Service
Before trying to use your new Telephony Gateway, contact your local cable company
to establish an Internet account and telephone service. When you call, have the
fol lowing information ready:
the Telephony Gateway serial number and cable MAC addresses of the unit
(printed on the back panel of the Telephony Gateway)
the model number of the Telephony Gateway (printed on the bottom panel
of the Telephony Gateway)
If the Telephony Gateway was provided by your cable company, they already have
the required information.
In addition, you should ask your cable company the following questions:
Do you have any special system requirements or files that I need to down-
load after I am connected?
When can I start using my Telephony Gateway?
Do I need a user ID or password to access the Internet or my e-mail?
Will my phone number(s) change?
What new calling features will I have and how do I use them?
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
8
Ethernet Cable
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Usage
Troubleshooting
Glossary
Xfinity TG1682 Telephony Gateway User’s Guide
System Requirements
The Telephony Gateway operates with most computers. The following describes re-
quirements for each operating system; see the documentation for your system for
details on enabling and configuring networking.
To use the Telephony Gateway, you need DOCSIS high-speed Internet service from
your cable company. Telephone service requires that the cable company has Pack-
etCable support.
Recommended Hardware
The following hardware configuration is recommended. Computers not meeting this
configuration can still work with the TG1682, but may not be able to make maxi-
mum use of TG1682 throughput.
CPU: P4, 3GHz or faster
RAM: 1GB or greater
Hard drive: 7200 RPM or faster
Ethernet: Gig-E (1000BaseT)
Windows
Windows XP, Windows Vista, Windows 7, or Windows 8. A supported Ethernet or
wireless LAN connection must be available.
MacOS
System 7.5 to MacOS 9.2 (Open Transport recommended) or MacOS X. A supported
Ethernet or wireless LAN connection must be available.
Linux/other Unix
Hardware drivers, TCP/IP, and DHCP must be enabled in the kernel. A supported
Ethernet or wireless LAN connection must be available.
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About this Manual
This manual covers the Xfinity TG1682 Telephony Gateway. The model number is
on the label affixed to the bottom of the Telephony Gateway. See the image at the
left.
What About Security?
Having a high-speed, always-on connection to the Internet requires a certain
amount of responsibility to other Internet users—including the need to maintain a
reasonably secure system. While no system is 100% secure, you can use the fol-
lowing tips to enhance your system’s security:
Keep the operating system of your computer or laptop updated with the lat-
est security patches. Run the system update utility at least weekly.
Keep your email program updated with the latest security patches. In addi-
tion, avoid opening email containing attachments, or opening files sent
through chat rooms, whenever possible.
Install a virus checker and keep it updated.
Avoid providing web or file-sharing services over your Telephony Gateway.
Besides certain vulnerability problems, most cable companies prohibit run-
ning servers on consumer-level accounts and may suspend your account for
violating your terms of service.
Use the cable company’s mail servers for sending email.
Avoid using
proxy
software unless you are certain that it is not open for
abuse by other Internet users (some are shipped open by default). Crimi-
nals can take advantage of open proxies to hide their identity when break-
ing into other computers or sending spam. If you have an open proxy, your
ca b
le company may suspend your account to protect the rest of the net-
work.
If you use the wireless LAN, make sure you enable wireless security on the
Telephony Gateway (for the same reasons that you should run only secured
proxies). See
Configuring Your Wireless Connection
.
Xfinity TG1682 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
10
Model
Number

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