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Downstream
In an HFC network, the direction from the head-end to the subscriber. Some
older cable documentation may refer to this as the forward path.
DOCSIS
Data Over Cable System Interface Specification. The interoperability stan-
dards used for data communications equipment on an HFC network.
EMTA
Embedded Multimedia Terminal Adapter. An MTA device that is integrated
with a cable modem.
Ethernet
A standard method of connecting two or more computers into a Local Area
Network (LAN).
EuroDOCSIS
The European version of DOCSIS.
Event
An informational message used for monitoring network status.
F-connector
The type of connector used on coax cable. There are two common types of
F-connector, slip-on and screw-on. Use coax with screw-on connectors for
connecting your Telephony Gateway.
Firewall
A hardware or software device that prevents unauthorized access to a pri-
vate network from the Internet. The TG852 provides a built-in firewall.
Gateway
The device, usually a router, that connects devices on a given IP subnet to
other IP subnets.
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
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Headend
The “central office” in an HFC network. The headend houses both video and
data equipment. In larger cable networks, a “master” headend often feeds
several “remote” headends to provide distributed services.
HTTP
HyperText Transfer Protocol.
Hub
A box with several Ethernet connectors. Ethernet hubs provide a common
point of contact for all connected devices.
IP address
A number assigned to your computer by your cable company, used to iden-
tify your computer to other systems on the Internet.
ISDN
Integrated Services Digital Network. A digital telephony standard that pro-
vides communication speeds about twice as fast as standard dialup.
LAN
Local Area Network. A network that allows computers in a single location
(such as a building) to communicate with one another.
LED
Light Emitting Diode. A semi-conductor diode that emits light when current
is passed through it.
MAC address
A number that uniquely identifies any device connected to a network. Your
cable company uses your Telephony Gateway’s MAC address to authorize
access to the Internet. The MAC address is printed on a label on the bottom
of your Telephony Gateway.
Protocol
A set of rules and formats that determines the communication behavior of
network entities at a given layer.
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
57
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Proxy
A device or program that stands in between a server (for example, a web
site) and a client (your browser), providing a way to relieve some of the
burden from the server. For example, your cable company may have a web
proxy that keeps copies of popular web pages; the proxy can send you those
pages instead of fetching them directly from the web site, resulting in faster
page loading and less network congestion.
RF
Abbreviation for Radio Frequency. Some literature refers to coax as “RF
cable” and the connectors as “RF connectors.”
RJ-11
A standard 2-conductor modular connector, commonly used in North Amer-
ica for connecting telephones.
RJ-45
A standard 8-conductor modular connector, commonly used on Ethernet
cable. An RJ-45 connector looks like a wide RJ-11 (telephone) connector.
Splitter
A small box with three cable connectors: one input and two outputs. You
may need a splitter if you have a TV already connected to the cable outlet
that you want to use for your Telephony Gateway. You can buy a splitter
from any electronics retailer and most discount stores.
SSID
Service Set IDentifier, a string of text (up to 32 characters long) that
uniquely identifies a wireless LAN.
Switched outlet
A power outlet that may be turned on and off using a wall switch. Usually
intended for lamps. Avoid plugging your computer or Telephony Gateway
into a switched outlet to avoid disruptions.
TCP/IP
Transmission Control Protocol/Internet Protocol. The protocols used to facil-
itate communications across one or more connected networks.
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Ethernet
Configuration
Usage
Troubleshooting
Glossary
58
Page 59 / 60
TDMA
Time Division Multiple Access. A method used by DOCSIS-compliant cable
modems for sending upstream data with minimal interference.
Upstream
The path from a subscriber device to the headend. Some older cable docu-
mentation may refer to this as the return path or reverse path.
WEP
Wired Equivalent Privacy, a common standard for encrypting data sent over
a wireless LAN.
WPA
Wi-fi Protected Access, a standard for encrypting data sent over a wireless
LAN. WPA offers improved security over WEP.
Touchstone TG852 Telephony Gateway User’s Guide
Safety
Getting
Started
Battery
Installation
Installation
Wireless
Configuration
Ethernet
Configuration
Usage
Troubleshooting
Glossary
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Touchstone®
TG852 Telephony Gateway
User’s Guide
Copyright © 2011 ARRIS. All rights reserved.
The information in this document is subject to change with-
out notice. The statements, configurations, technical data,
and recommendations in this document are believed to be
accurate and reliable, but are presented without express
or implied warranty. Users must take full responsibility for
their applications of any products specified in this docu-
ment. The information in this document is proprietary to
ARRIS.
ARRIS, Touchstone, and the ARRIS logo are trademarks or
registered trademarks of ARRIS Group. All other trade-
marks and registered trademarks are the property of their
respective holders.
Protected under one or more of the following U.S. patents:
7,031,435; 7,100,011. Other patents pending.
ARSVD01310
Release
8
Standard 1.4
January 2011
Touchstone® TG852 Telephony Gateway User’s Guide
Export Regulations
Safety Requirements
FCC Part 15
European Compliance
Getting Started
About Your New Telephony Gateway
What’s in the Box?
What’s on the CD?
Items You Need
Getting Service
System Requirements
Recommended Hardware
Windows
MacOS
Linux/other Unix
About this Manual
What About Security?
Ethernet or Wireless?
Wireless
Both
Battery Installation and Removal
TG852 Basic Battery Installation and Replacement
TG852 Extended Battery Installation and Replacement
Installing and Connecting Your Telephony Gateway
Front Panel
Rear Panel
Selecting an Installation Location
Factors Affecting Wireless Range
Mounting the Telephony Gateway
Tools and Materials
Location
Instructions
Wall-mounting instructions
Desktop mounting instructions
Connecting the Telephony Gateway
Configuring Your Wireless Connection
Accessing the Configuration Interface
Setting Parental Controls
Configuring Your Ethernet Connection
Requirements
How to use this chapter
TCP/IP Configuration for Windows 2000
TCP/IP Configuration for Windows XP
TCP/IP Configuration for Windows Vista
TCP/IP Configuration for Windows 7
TCP/IP Configuration for MacOS X
Using the Telephony Gateway
Setting up Your Computer to Use the Telephony Gateway
Indicator Lights for the TG852
Wiring Problems
Patterns: Normal Operation (LAN and Telephone)
Patterns: Normal Operation (WAN and Battery)
Patterns: Startup Sequence
Telephony Start Up Sequence
Cable Modem Start Up Sequence
Using the Reset Button
Resetting the Router to Factory Defaults
Booting from Battery
Troubleshooting
Glossary

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