ARRIS WTM552 User Manual

Touchstone® WTM552 Telephony Modem

User’s Guide

Get ready to experience the Internet’s express lane! Whether you’re checking out
streaming media, downloading new software, checking your email, or talking with
friends on the phone, the T ouchstone WTM552 Telephony Modem brings it all to you
faster and more reliably . All whil e providing toll quality V oice o ver IP telephone ser­vice and both wired and wireless connectivity. Some models even provide a Lithi­um-Ion battery backup to provide continued telephone service during power
outages.

The Touchstone Telephony Modem provides four Ethernet connections for use as
the hub of your home/office Local Area Network (LAN). The Touchstone Telephony
Modem also provides 802.11b/g wireless connectivity for enhanced mobility and
versatility. In addition, the Touchstone Telephony Modem provides for up to two
separate lines of telephone service.

Installation is simple and your cable company will provide assistance to you for any
special requirements. The links below provide more detailed instructions.

Safety Requirements
Getting Started
Battery Installation and Replacement (WTM552G/H Models Only)
Installing and Connecting Your Tele phony Modem
Configuring Your Wireless Connect ion
Configuring Your Ethernet Connection
Using the Telephony Modem
Troubleshooting
Glossary

Touchstone® WTM552 Telephony Modem User’s Guide 1

Export Regulations

This product may not be exported outside the U.S . and Canada without U.S. Department of Commerce, Bureau of Export Admin­istration authorization. Any export or re-export by the purchaser, directly or indirectly, in contravention of U.S. Export Adminis­tration Regulation is prohibited.

Copyright © 2005–2007 ARRIS Group. Patents pending. All rights reserved.
The information in this document is subject to change without not ice. The statement s, configur ations, t echnical data, and recom -

mendations in this document are believed to be accurate and reliable, but are presented without express or implied warranty.
Users must take full resp onsibility for their applic ations of any products speci f ied in this document. T he information in this docu­ment is proprietary to ARRIS.

ARRIS, Touchstone, and the ARRIS logo are trademarks or registered trademarks of ARRIS Group. All other trademarks and reg­istered trademarks are the property of their respective holders.

Release 5 Standard 1.1 April 2007

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Safety Requirements

ARRIS T elephon y Modems comply with the applicable requirements for
performance, construction, labeling, and information when used as
outlined below:

CAUTION

Potential equipment damage
Potential loss of service

Connecting the Telephony Modem to existing
telephone wiring should only be performed by a
professional installer. Physical connections to the
previous telephone provider must be removed and
the wiring must be checked; there must not be any
voltages. Cancellation of telephone service is not
adequate. Failure to do so may result in loss of
service and/or permanent damage to the T elephony
Modem.

CAUTION

Potential equipment damage

Do not locate the equipment within 6 feet (1.9m) of
a flame or ignition source (e.g. heat registers, space
heaters, fireplaces, etc.), to avoid damage or injury
from battery explosion.

• The Telephon y Modem is designed to be connected directly to a
telephone.

• Connecting the Telephony Modem to the home's existing tele­phone wiring should only be performed by a professional in­staller.

• Do not use product near water (i.e. wet basement, bathtub,
sink or near a swimming pool, etc.), to avoid risk of electrocu­tion.

• Avoid using and/or connecting the equipment during an electri­cal storm, to avoid risk of electrocution.

• Use only power supply and power cord included with the equip­ment.

• Equipment should be installed near the power outlet and should
be easily accessible.

• The shield of the coaxial cable must be connected to earth
(grounded) at the entrance to the building in accordance with
applicable national electrical installation codes. In the U.S. , this
is required by NFPA 70 (National Electric al Code) Article 820. In
the European Union and in certain other countries, CA TV instal­lation equipotential bonding requirements are specified in IEC
60728-11, Cable networks for television signals, sound signals
and interactive services, Part 11: Safety. This equipment is in­tended to be installed in accordance with the requirements of
IEC 60728-11 for safe operation.

If the equipment is to be installed in an area serviced by an IT
power line network, as is found in many areas of Norway, spe­cial attention should be given that the installation is in accor­dance with IEC 60728-11, in particular Annex B and Figure B.4.

• In areas of high surge events or poor grounding situations and
areas prone to lightning strikes, additional surge protection
may be required (i.e. PF11VNT3 from American P ower Conv er­sion) on the AC, RF, Ethernet and Phone lines.

• When the Telephony Modem is connected to a local computer
through USB or Ethernet cables, the computer must be proper­ly grounded to the building/residence AC ground network. All
plug-in cards within the computer must be properly installed
and grounded to the computer frame per the manufacturer’s
specifications.

Touchstone® WTM552 Telephony Modem User’s Guide 3

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

European Compliance

This product complies with the provisions of the Electromagnetic Com­patibility (EMC) Directive (89/336/EEC), the Amending Directive (92/
31/EEC), the Low Voltage Directive (73/23/EEC), and the CE Marking
Directive (93/68/EEC). As such, this product bears the CE marking in
accordance with the above applicable Directive(s).

A copy of the Declaration of Conformity ma y be obtained from: ARRIS
International, Inc., 3871 Lakefield Drive, Suite 300, Suwanee, GA

30024.

As indicated by this symbol, disposal of this prod­uct or battery is governed by Directive 2002/96/
EC of the European Parliament and of the Council
on waste electrical and electronic equipment
(WEEE). WEEE could potentially prove harmful to
the environment; as such, upon disposal of the T e­lephony Modem the Directive requires that this
product must not be disposed as unsorted munic­ipal waste, but rather collect ed separately and dis­posed of in accordance with local WEEE
ordinances.

This product complies with directive 2002/95/EC of the
European Parliament and of the Council of 27 January
2003 on the restriction of the use of certain hazardous
substances (RoHS) in electrical and electronic equip­ment.

Touchstone® WTM552 Telephony Modem User’s Guide 4

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Getting Started

About Your New Telephony Modem

The Touchstone WTM552 Telephony Modem is DOCSIS or Euro-DOCSIS compliant
with the following features:

• Speed: much faster than dialup or ISDN service

• Convenience: supports Ethernet and 802.11b/g wireless connections; both
can be used simultaneously

• Flexibility: provides two independent lines of telephone service as well as
high speed data

• Compatibility: supports tiered data services (if offered by your cable
company)

All WTM552 models provide:

• Wireless 802.11b/g connectivity

• Four Ethernet ports for connections to non-wireless devices

• Up to two lines of telephone service

Your WTM552 model is one of the following:

• WTM552A: DOCSIS compliant

• WTM552B: Euro-DOCSIS compliant

• WTM552G: DOCSIS compliant with Li-Ion backup battery

• WTM552H: Euro-DOCSIS compliant with Li-Ion backup battery

Touchstone® WTM552 Telephony Modem User’s Guide 5

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

What’s in the Box?

Make sure you have the following items before proceeding. Call y our cable company
for assistance if anything is missing.

• Telephony Modem

• Antenna

•Power Cord

• Quick Installation Guide

•Ethernet Cable

•CD-ROM

• Screws for wall-mounting the unit

• End User License Agreement

What’s on the CD?

The CD provides the following items:

• Quick Install Guide

• User’s Guide

Touchstone® WTM552 Telephony Modem User’s Guide 6

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Items You Need

If you are installing the T elephony Modem yourself, make sure you have the follow­ing items on hand before continuing:

Coax Cable

• Telephony modem package: see What’s in the Box?
the package.

• Coaxial cable (coax): as shown in the image to the left, this is a thin cable
with a connector on each end. It is the same kind of wire used to connect
to your television for cable TV. Y ou 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 Modem. The coax should be long
enough to reach from your Telephony Modem to the nearest cable outlet.

• 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 single
outlet into two. Y ou ma y need a splitter if you hav e a TV already connected
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 Modem and TV to the splitter.

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.

• Information packet: your cable company should furnish you with a packet
containing information about your service and how to set it u p. Read this
information carefully and contact your cable company if you have any ques­tions.

for a list of items in

Phone Cable

Touchstone® WTM552 Telephony Modem User’s Guide 7

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Getting Service

Before trying to use your new Telephony Modem, contact your local cable company
to establish an Internet account and telephone service. When y ou call, have the fol­lowing information ready:

• the Telephony Modem serial number and cable MAC addresses of the unit
(printed on a sticker on the bottom of the Telephony Modem, as shown on
the next page)

• the model numbe r of the Telephony Modem

If the Telephony Modem 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 down­load after I am connected?

• When can I start using my Telephony Modem?

• 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?

Touchstone® WTM552 Telephony Modem User’s Guide 8

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

System Requirements

The Touchstone Telephony Modem operates with most computers. The following
describes requirements for each operating system; see the documentation for your
system for details on enabling and configuring networking.

To use the Telephony Modem, you need DOCSIS high-speed Internet service from
your cable company.

Windows

Windows 95, Windows 98, Windows 98 SE (Second Edition), Windows ME, Windows
2000, or Windows XP. A supported Ethernet or wireless LAN connection must be
available.

MacOS

System 7.5 to MacOS 9.2 (Open T ransport 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.

About this Manual

This manual is written to cover all of the different WTM552 models. Your model ma y
or may not have all of the capabilities outlined in this manual. To determine which
model you have purchased, refer to the image at the left. The model number is on
the label affixed to the Telephony Modem.

FOR HOME OR OFFICE USE

Model Number

Touchstone® WTM552 Telephony Modem User’s Guide 9

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Ethernet or Wireless?

There are two ways to connect your computer (or other equipment) to the T elepho­ny Modem. The following will help you decide which is best for you:

Ethernet

Ethernet is a standard method of connecting two or more computers into a Local
Area Network (LAN). You can use the Ethernet connection if your computer has
built-in Ethernet hardware.

Note: T o connect more than four computers to the WTM552 through the Ether-

net ports, you will need an Ethernet hub (available at computer retail­ers).

The Telephony Modem package comes with one 6-foot (1.9m) Ethernet cable (the
connectors look like wide telephone connectors); you can purchase more cables if
necessary at a computer retailer. If you are connecting the Telephony Modem di-

Ethernet Cable

rectly to a computer, or to an Ethernet hub with a cross-over switch, ask for
Category 5 (CAT5) straight -through cable. If you are connecting the Telephony Mo­dem to an Ethernet hub without a crossover switch, ask for a Category 5 crossover
cable.

Wireless

The 802.11 wireless LAN standard allows one or more computers to access the
WTM552 using a wireless (radio) signal. Y ou can use the wireless connection if your
computer has a built-in or aftermarket wireless card.

Note: T o learn more about which wireless hardware works best with your com-

puter, see your computer dealer.

Both

If you have two or more computers, you can use Ethernet for up to four devices
and wireless for others. To connect five or more computers to the Ethernet ports,
you will need an Ethernet hub (available at computer retailers).

For more information about connecting two or more computers, contact your cable
service provider.

Touchstone® WTM552 Telephony Modem User’s Guide 10

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

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 fol­lowing tips to enhance your system’s security:

• Keep your operating system updated with the latest security pa tches. Run
the system update utility at least weekly.

• Keep your email program updated with the latest security patches. In addi­tion, 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 Modem.
Besides certain vulnerability problems, most cable companies prohibit run­ning 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
abuse by other Internet users (some are shipped open by default). Crimi­nals can take advantage of open proxi es to hide their identity when breaking
into other computers or sending spam. If you have an open proxy, your ca­ble company may suspend your account to protect the rest of the network.

• If you use the wireless LAN, make sure you enable wireless security on the
Telephony Modem (for the same reasons that you should run only secured
proxies). See “Wireless Configuration” for help.

software unless you are certain that it is not open for

Touchstone® WTM552 Telephony Modem User’s Guide 11

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Battery Installation and Replacement (WTM552G/H Models Only)

2.2 Ah Battery

4.4 Ah Battery

WTM552G and WTM552H Telephony Modems may optionally include one of two
types of Lithium-Ion batteries: a 2.2 Amp-hour
For safety and regulatory purposes, the battery is shipped outside of the Telephony
Modem and must be installed.

Identify the battery type using the photos to the left and use the proper installation
procedure:

• 2.2 Ah Battery Installation and Replacement

• 4.4 Ah Battery Installation and Replacement

Note: The 4.4 Ah battery is longer and has a strap between the guides.

To order new or replacement batteries, visit
Product IDs are:

• 2.2 Ah battery: 718003

• 4.4 Ah battery: 718005

(Ah) battery or a 4.4 Ah battery.

http://www.yourbroadbandstore.com/.

Touchstone® WTM552 Telephony Modem User’s Guide 12

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

2.2 Ah Battery Installation and Replacement

This model of the T elephony Modem has the abili ty to provide battery backup in the
event of a local power loss. The battery backup is not intended to take the place of

Latch

End

AC power. The 2.2Ah Lith ium-Ion battery pa ck can be inserted in to the Telephony
Modem. Use this procedure to install and to replace the backup battery.

Action

1 Insert a finger into the latch opening, press down and pull back on the latch

holding the battery door (on the bottom of the Telephony Modem). Pull the
door toward you. Set the door aside in a safe place.

Battery Slot

Battery Guide

2 Hold the battery pack so that the guides on the battery align with the slots

on the Telephony Modem and slide the battery into the bay. The diagram on
the left shows the proper orientation. The battery will not insert completely
into the Telephony Modem if not oriented correctly.

Touchstone® WTM552 Telephony Modem User’s Guide 13

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

3

Push the battery pack into the bay until it seats into place. The following di-

Battery

Opening

agram shows a Telephony Modem with a 2.2Ah battery pack installed. If
you are taking the battery out of the unit, position your finger in the
battery opening area and use leverage to dislodge the battery while
pulling it straight back.

Note: The Telephony Modem will not begin operating until you apply AC

power.

Receiver
Slots

Hinge Tabs

4 R eplace the door. To do so, place the hinge tabs of the battery door into the

receiver slots inside the Telephony Modem battery compartment on the op­posite end of the battery opening slot. Rotate the door toward the unit until
the latch snaps back into place.

Note: The Lithium-Ion battery pack contains precious material, so there

may be some benefit in recycling. Please dispose of the battery responsibly
and in accordance with local ordinances.

Touchstone® WTM552 Telephony Modem User’s Guide 14

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

4.4 Ah Battery Installation and Replacement

The 4.4 Ah Lithium-Ion battery pack can be inserted into the Telephony Modem.
Use this procedure to install and to replace the backup battery.

Action

1 Insert a finger into the latch opening, press down and pull back on the latch

holding the battery door (on the bottom of the Telephony Modem). Pull the
door toward you. Set the door aside in a safe place.

2 Hold the battery pack so that the guides on the battery align with the slots

on the Telephony Modem and slide the battery into the bay. The diagram on
the left shows the proper orientation.

Note: The battery wi ll not insert completely int o the Telephony Modem if not

oriented correctly. The battery should slide into the bay without significant
force. Line up the slots in the battery bay with the guides on the battery and
apply even pressure on both ends of the battery.

Battery Guide

Latch
End

Battery
Pull Strap

Receiver
Slots

Hinge Tabs

WRONG WRONG RIGHT

Touchstone® WTM552 Telephony Modem User’s Guide 15

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

3

Push the battery pack into the bay until it latches into place. The diagram

Battery
Pull Strap

Battery

Opening

shows a Telephony Modem with a 4.4 Ah Lithium-Ion battery pack installed.

If you are taking the battery out of the unit, make sure to use the
battery pull strap to dislodge the battery.

Note: The Telephony Modem will not begin operating until you apply AC

power.

Receiver
Slots

Hinge Tabs

4 Replace the door. To do so, place the tabs of the battery door into the slot

on the Telephony Modem battery compartment. Rotate the door toward the
unit until the latch snaps back into place.

Note: The Lithium-Ion battery pack contains precious material, so there

may be some benefit in recycling. Please dispose of the battery responsibly
and in accordance with local ordinances.

Touchstone® WTM552 Telephony Modem User’s Guide 16

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Installing and Connecting Your Telephony Modem

Before you start, make sure that:

• You have contacted your cable company and v erified that they provide data
and telephone service using standard DOCSIS technology.

•You have all the Items You Need

• Cable, phone, and power outlets are available near the computer. If a cable
outlet is not conveniently located, your cable company can install a new one.

CAUTION
Risk of equipment damage

Only qualified installation technicians should connect the T elephony Mo­dem to house wiring. Incumbent telephone service must be physically
disconnected at the outside interface box before making any
connections.

.

Touchstone® WTM552 Telephony Modem User’s Guide 17

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Front Panel WTM552A/B

WTM552A/B

Touchstone

Telephony

Modem

TM

Telephone2

Tel ephone 1

DMZ

WLAN

LAN 4

LAN 3

D

LAN 2

LAN 1

F G H I

Online

Link

Power

DS

US

The front of the Telephony Modem has the following indicators:

A Telephone 1/2: indicates the status of each telephone line
BDMZ: indicates the status of the DMZ connection (a computer outside the

firewall)

CWLAN: indicates the status of the wireless LAN
DLAN 1–4: indicates the status of each Ethernet port

ELink: indicates Ethernet or wireless connectivity between the Telephony

Modem and computers

F Online: indicates internet data transmission status

A

B C

E

GUS: indicates upstream connectivity
HDS: indicates downstream connectivity
IPower: indicates whether AC power is available to the unit

Touchstone® WTM552 Telephony Modem User’s Guide 18

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Front Panel WTM552G/H

The front of the Telephony Modem has the following indicators:

WTM552G/H

A Battery: indicates status of the battery in the Telephony Modem

E

G HGI J

B Telephone 1/2: indicates the status of each telephone line
CDMZ: indicates the status of the DMZ connection (a computer outside the

firewall)

DWLAN: indicates the status of the wireless LAN
ELAN 1–4: indicates the status of each Ethernet port

FLink: indicates Ethernet or wireless connectivity between the Telephony

Modem and computer

B

C D

A

F

HUS: indicates upstream connectivity
IDS: indicates downstream connectivity
JPower: indicates whether AC powe r is available to the unit

G Online: indicates internet data transmission status

Touchstone® WTM552 Telephony Modem User’s Guide 19

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Rear Panel

WTM552

C

A/B

D E

The rear of the Telephony Modem has the following connectors and controls:

ATel 1 (A/B/H models): connector for the first phone line

Tel 1/2 (G models): connector for the first phone line (or both lines of a

2-line phone)

BTel 2: connector for the second phone line
C Antenna: connector for the wireless antenna

A

BG

WTM552

C

F

G/H

D E

4,3,2,1

H

D Ethernet connectors
ERouter Reset button: resets the Ethernet and wireless ports without affect-

ing telephony service.

FTM Reset button: resets the Telephony Modem as if you power cycled the

unit. Use a pointed non-metallic object to press this button.

GCable: connector for the coax cable
HPower: connector for the power cord

: for use with a computer LAN port

A

BG

F

H

Touchstone® WTM552 Telephony Modem User’s Guide 20

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Selecting an Installation Location

There are a number of factors to consider when choosing a location to install your
Telephony Modem:

• Is an AC outlet available nearby? For best results, the outlet should not be
switched and should be close enough to the Telephony Modem that exten­sion cords are not required.

• Is a cable jack available? For best performance, keep the number of splitters
between the jack and cable drop to a minimum. Each splitter attenuates (re­duces) the signal available to the T e lephony Modem. A large number of split­ters can slow down the Internet connection and even affect yo ur telephone
service.

• Can you easily run cables between the T elephon y Modem’s location and the
phones?

• If you are connecting devices to the Ethernet ports, can you easily run ca­bles between the Telephony Modem’s location and those devices?

• If you want to mount the T elephony Modem on a wall , does the location pro­vide a solid surface for secure attachment? For best results when mounting
the Telephony Modem on drywall, position the Telephony Modem so at least
one of the screws are fastened to a stud. This may prevent the Telephony
Modem from pulling out of the wall in the future.

• If you want to install the Telephony Modem on a desktop, is there enough
space on either side to keep the vents clear? Blocking the vents may cause
overheating.

• How close are your wireless devices? The Telephony Modem wireless con­nection range is typically 100–200 feet (30m–65m). A number of factors
can affect connection range, as described below.

Touchstone® WTM552 Telephony Modem User’s Guide 21

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Factors Affecting Wireless Range

A number of factors can affect the usable range for wireless connections.

Increases range: • Raising the antenna above the devices (for example, in-

stalling the Telephony Modem in the upper floor of a
multi-story dwelling or using an aftermarket omnidirec­tional antenna)

• Using an aftermarket directional antenna (increases
range in one direction while decreasing range in other
directions)

• Adding wireless hubs in a bridge (WDS) network

Decreases ra nge: • Lowering the antenna below the devices (for example,

installing the Telephony Modem in a basement)

• Removing the antenna

• Metal or concrete walls between the Telephony Modem
and other devices

• Large metal appliances, aquariums, or metal cabinets
between the Telephony Modem and other devices

• Interference and RF noise (2.4 GHz wireless phones,
microwave ovens, or other wireless networks)

Note that decreasing the range of your wireless network may be beneficial, as long
as the decreased range is sufficient for your needs. By limiting your network’s
range, you reduce interference with other networks and make it harder for unw ant­ed users to find and connect to your network.

Touchstone® WTM552 Telephony Modem User’s Guide 22

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Mounting the Telephony Modem

You can either mount the Telephony Modem on a wall or place it on a desktop. Fo r
wall-mount applications, you can mount the Telephony Modem with the indicators
facing upward (vertical) or to the side (horizontal).

Tools and Materials

For wall-mounted installations, make sure you have the following tools and mate­rials before proceeding:

• for mounting on drywall: Two 1/4” (6mm) drywall anchors and a drill with
1/4” (6mm) bit (not included)

• for mounting on plywood or studs: two #6 x 1.5” (38.1 mm) self
screws (included)

• screwdriver (flat-blade or Phillips, depending on what kind of screws you
use)

• wall-mount template (included with the T elephony Modem Quick Installation
Guide)

• transparent tape (for temporarily securing the mounting template to the
wall)

tapping

Touchstone® WTM552 Telephony Modem User’s Guide 23

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Instructions

Wall-mounting instructions
1 Position the mounting template on the surface where you intend to mount

the Telephony Modem and secure in place with transparent tape.

2 Drill holes through the template in the specified locations for the mounting

Step 1 Step 2

screws. After drilling holes, remove the template from the surface.

3 If using drywall anchors, set them into the wall. Then, drive the screws into

the wall leaving a gap of about 1/8” (3 mm) between the screw head and
the wall. If not using anchors, just drive the screws.

4 Orient the Telephony Modem with the indicator lights facing up or right, as

desired. Slip both mounting slots (in the back of the T elephony Modem) over
the screws, then slide the case down until the narrow end of the keyhole slot

Step 3 Step 4

contacts the screw shaft.

5 Proceed to Connecting the Telephony Modem

.

Desktop mounting instructions
1 Position the Telephony Modem so that:

• air flows freely around it

• the back faces the nearest wall

• it will not fall to the floor if bumped or moved

2 Proceed to Connecting the Telephony Modem

.

Touchstone® WTM552 Telephony Modem User’s Guide 24

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Connecting the Telephony Modem

WTM552

C

A

WTM552

C

A/B/C

D E

4,3,2,1

BG

F

H

G/H

D E

WARNING: Connecting the Telephony Modem to the home's existing
telephone wiring should only be performed by a professional install­er. Physical connections to the previous telephone provider must be
removed and the wiring must be checked; there must not be any
voltages. Cancellation of telephone service is not adequate. Failure
to do so may result in loss of service and/or permanent damage to
the Telephony Modem.

1 Thread the antenna onto the Antenna connector on the back of the Telepho-

ny Modem (C). Tighten only by hand. Turn the antenna so that it points
straight up, if possible.

2 Connect one end of the coax cable to the cable outlet or splitter, and the

other end to the Telephony Modem’s Cable connector (G). Tighten the con­nections 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 Modem.

3 Insert the plug from the power cord into the Power connector on the back

of the T elephony Modem (H) and insert the power cord into a convenient AC
outlet.

The Power light on the front of the Telephony Modem lights up, then flashes
once (refer to the LED table on page 44). See Troubleshooting
light does not turn on.

if the Power

A

BG

F

H

4 Connect one end of the Ethernet cable to any Ethernet port on the back of

the T elephony Modem, (D) and the o ther end to the Ethernet por t on a com­puter, hub, or broadband router.

Note: If you are connecting to a computer, use the Ethernet cable included
in the Telephony Modem package.

5 Connect one end of the telephone cable to the telephone port on the back

of the Telephony Modem (A or B). Connect the other end to the telephone.

Touchstone® WTM552 Telephony Modem User’s Guide 25

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring Your Wireless Connection

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

The WTM552 ships with a basic factory default configuration that should allow you
to immediately access the Internet with a wireless connection. If your computer is
equipped with a 802.11b/g wireless LAN card, you may wish to configure the
WTM552 wireless settings. At a minimum, ARRIS suggests that you configure se­curity settings.

Requirements

Make sure you have the following before attempting to configure your Ethernet
connection:

• Computer with:
— Ethernet interface or wireless interface
— Ethernet cable, if using Ethernet interface (supplied)

•Web browser

Touchstone® WTM552 Telephony Modem User’s Guide 26

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuration Basics

The WTM552 uses a web-based interface to configure wireless s ettings. The follow-

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

ing screen shows the various components of the interface.

➀

➂

➁

1 Access bar: Shows the WTM552 connection status and provides the follow-

ing links:
— Home — returns to the Status page (shown above) from any screen.
— Help — displays help for the current screen.
— Login/Logout — allows access to screens other than the Status screen.

2 Navigation menu: Select any of the items in this list to display an associ-

ated submenu. Selecting submenu items displays the associated screen. If
you are not logged in, the WTM552 displays the login screen before allowing
you to proceed.

3Display area: Enter or view configuration information in this area. A ? link

may be available to explain the purpose of the screen or individual items on
the screen.

Touchstone® WTM552 Telephony Modem User’s Guide 27

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Accessing the Configuration Interface

Follow these steps to access the configuration interface. You should have already

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuratio n Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

set up the WTM552 as described in Installing and Connecting Your Telephony Mo-

dem.

1 Use the connection utility for your operating system to connect to the wire-

less LAN arris54g (this is the Telephony Modem’s factory default SSID

2 In your web browser, open the page http://192.168.2.1/ to display the

Status screen:

).

Touchstone® WTM552 Telephony Modem User’s Guide 28

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

3 Click the Login link in the Access bar to display the Login screen:

Note: The Telephony Modem ships with no password configured. When you

log in for the first time, leave the Password field blank.

4 Click the Submit button to return to the Status screen.

Note: The Access bar should now show Logout in place of Login.

5 Proceed to Configuring System Settings

.

Touchstone® WTM552 Telephony Modem User’s Guide 29

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring System Settings

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

1 Click the Ut ilities link (at the bottom of the Navigation menu) to ope n the

Utilities menu, then click System Settings to access the System Settings
screen:

2 Make changes as follows:

— Enter Current Password: If you have already created a password, and

you want to change settings on this screen, enter the password here.

— Enter New Password: Enter a password that you will remember but is not

easy to guess.
— Confirm new Password: Enter the same password again.
— Time Zone: Sele ct the proper time z one for your location. Th e Telephony

Modem uses an Internet time server to set its internal clock.

3 Scroll down to the bottom of the page and click the Save button. If you are

prompted to log in again, type your new password and click the Submit but­ton.

4 Proceed to Setting Up Your WAN Connection

Touchstone® WTM552 Telephony Modem User’s Guide 30

.

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Setting Up Your WAN Connection

Follow these steps to set up your WAN connection.

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection
— Dynamic
— Static
— PPPoE
— PPTP
— Telstra BigPond
— L2TP

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

1 Click the WAN Setup link in the navigation menu, then click Connection

Type.

The Connection Type screen appears:

2 Choose the correct connection type in the Connection T ype screen. Most ca-

ble companies require the Dynamic connection type. If your cable company
requires a different connection type, you should have a n i n f o rm ation sheet
that shows the proper connection type to select and other information need­ed to set up the connection.

3 Click the Next button at the bottom of the screen (you may have to scroll

down in the browser to see the Next button). The T elephony Modem displays
a screen showing further settings for your connection type. Follow the ap­propriate link for your connection type:

Touchstone® WTM552 Telephony Modem User’s Guide 31

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

— Dynamic
— Static
— PPPoE
— PPTP
— Telstra BigPond
— L2TP

Dynamic

a. Fill in the Host Name field, using any name you want.
b. If you need to clone your computer's MAC address, click the Change

WAN MAC Address link and proceed to XXX.

c. Click the Save button.
d. Proceed to Configuring the LAN Channel and Name

.

Static

a. Fill in the IP Address, Subnet Mask, and ISP Gateway address fiel ds with

the information provided by your cable company.

b. If you need to enter DNS settings, click the link and proceed to Setting

Up DNS.

c. Click the Save button.
d. Proceed to Configuring the LAN Channel and Name

.

Touchstone® WTM552 Telephony Modem User’s Guide 32

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

PPPoE

a. Fill in the fields with the information provided by your cable company.
b. Click the Save button to return to the Status screen.
c. Proceed to Configuring the LAN Channel and Name

.

PPTP

a. Fill in the fields with the information provided by your cable company.
b. If you need to enter DNS settings, click the link and proceed to Setting

Up DNS.

c. Click the Save button to return to the Status screen.
d. Proceed to Configuring the LAN Channel and Name

.

Touchstone® WTM552 Telephony Modem User’s Guide 33

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Telstra BigPond

a. Fill in the fields with the information provided by your cable company.
b. Click the Save button to return to the Status screen.
c. Proceed to Configuring the LAN Channel and Name

.

L2TP

a. Fill in the fields with the information provided by your cable company.
b. If you need to enter DNS settings, click the link and proceed to Setting

Up DNS.

c. Click the Save button to return to the Status screen.
d. Proceed to Configuring the LAN Channel and Name

.

Touchstone® WTM552 Telephony Modem User’s Guide 34

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Setting the MAC Address

Most cable companies authenticate customers by the MAC address of your comput-

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

er. In some cases, you may need to change the MAC address of the T elephony Mo­dem’s WAN port. Follow these steps only if your cable company requires this
change.

1 Click the WAN Setup link in the navigation menu, then click MAC Address.

The MAC address window appears:

2 If the MAC address required is that of the computer you are using to set up

the Telephony Modem, click the Clone button.

The Telephony Modem updates the WAN MAC Address field with the MAC
address of your computer.

3 If you need to enter a MAC address manually , enter the hex digits (0-9, a-f)

in the WAN MAC Address field. If you need help determining the MAC ad­dress, see Finding the MAC Address of a computer

4 Click the Save button to continue.
5 To configure DNS settings, proceed to Setting Up DNS

to Configuring the LAN Channel and Name

Touchstone® WTM552 Telephony Modem User’s Guide 35

.

.

. Otherwise, proceed

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Setting Up DNS

Follow these steps to set up DNS.

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

1 Click the WAN Setup link in the navigation menu, then click DNS.

The DNS screen appears:

2 If your cable company has provided you with the IP addresses for their DNS

servers, enter the IP addresses in the DNS Address and Secondary DNS

Address fields.

3 If you have not received DNS server information, check Automatic from

ISP.
4 Click the Save button to return to the Status screen.
5 Proceed to Configuring the LAN Channel and Name

Touchstone® WTM552 Telephony Modem User’s Guide 36

.

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring the LAN Channel and Name

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

1 Click the Wireless Setup link to open the Wireless menu, then click the

Channel and SSID link to open the Channel and SSID screen:

2 Make the following changes to this screen as desired:

— Wireless Channel: Use the default shown in most cases. You may need

to change the channel if neighbors have wireless routers, or if you lose
your connection while using certain remote telephones.

— SSID

— Broadcast SSID: Uncheck to prevent passers-by from seeing your

— Protected Mode: Set to On only if needed to overcome interference.

: Give your wireless LAN any name y ou desire. For best security, do

not use your name or address. The default SSID is arris54g.

wireless LAN name in their connection utility. This provides only a small
amount of extra security, since many wireless utilities can learn an SSID
by listening to wireless traffic.

3 Click the Save button.
4 Proceed to Configuring Wireless Security

Touchstone® WTM552 Telephony Modem User’s Guide 37

.

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring Wireless Security

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

1 Click the Security link under the Wireless menu to open the Security screen:

2 In the Security Mode menu, choose WPA

ment that does not support WPA; in that case, choose 128-bit WEP
secure) or 64-bit WEP (more compatible with older wireless equipment).

Depending on the security mode chosen, the WTM552 displays one of the
following screens to allow you to configure a key.

unless you have wireless equip-

(more

Touchstone® WTM552 Telephony Modem User’s Guide 38

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

3 Enter a password or pass phrase in the text box. For WEP security, click the

Generate button to the right of the text box to create the hex key.
Note: Do not make changes to the other it ems unless required by your oth-

er wireless equipment.

4 Click the Save button.

You have completed the basic configuration steps. Unless your cable operator re­quires additional configuration, which would be described in the information packet,
you should now be able to access the Internet. If you want to further customize
your configuration, proceed as foll ows:

• Configuring the Firewall

• Configuring DDNS

• Configuring Wireless Bridging

If you have any problems, proceed to Troubleshooting

.

Touchstone® WTM552 Telephony Modem User’s Guide 39

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring the Firewall

The WTM552 provides a firewall to protect the computers on your home network

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

from unwanted access. The firewall provides the following features:

• Virtual Server Support: if you have a server on your home network that you
want to make available to the general Internet, you can configure a virtual
server. The firewall passes requests from the Internet to the designated
computer on your home network.

• DMZ: if you need to access a service that cannot pass through the firewall,
the DMZ allows a single computer on the home network to appear as if it
were connected directly to the Internet. A computer in the DMZ is complete­ly exposed to the Internet as if there were no router or firewall, so it is best
to activate the DMZ only when necessary.

• Client filters: you can use client filters to block computers on your network
from accessing the Internet (or certain services) during specific days and
times.

• MAC Address filtering: allows access to the wireless network only by com­puters specifically authorized to connect.

• Ping blocking: ignores ICMP (Ping) requests from the Internet.

Proceed to the next page to begin configuring the firewall.

Touchstone® WTM552 Telephony Modem User’s Guide 40

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring Virtual Servers

Follow these steps to allow outside access to servers on your internal network.

1 Click the Firewall link in the navigation menu, then click Virtual Servers.

The Virtual Servers window appears.

2 Proceed as follows:

If you want to… Then …

Add a well-known service Choose the desired service from the Add

drop-down menu and then click the Add
button.

Add a custom service Fill in a row as follows:

• Description: the service name.

• Inbound port: the beginning and ending
ports of the range required to support
this service. These are the ports that
outside clients use to access your server.

• Type: Choose TCP or UDP. If the service
requires passing both TCP and UDP
packets, you must create a second row.

• Private IP address: the IP address of the
server on your internal network.

• Private port: the beginning and ending
ports of the range required by this ser­vice. The private ports may be different
from the Inbound ports.

Enable or disable a
service

Check (or clear) the box in the Enable column
next to the service.

Remove a service Choose the row to remove in the Clear Entry

drop-down menu and click the Clear button.

3 Click the Save button at the bottom of the page (you may need to scroll

down) to save your changes.

4 Proceed to Configuring Client IP Filters

.

Touchstone® WTM552 Telephony Modem User’s Guide 41

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring Client IP Filters

Follow these steps to configure client IP filters.

1 Click the Firewall link in the navigation menu, then click Client IP Filters.

The Client IP Filters window appears.

2 Fill in the fields as follows:

a. IP: the beginning and ending address in a range of IP addresses. To

block only one address, use the same address twice.

b. Port: the beginning and ending port in a range of ports. To block only

one port, enter the same port twice.

c. Type: choose one of TC P, UDP, or BOTH.
d. Block Time: choose Always to set up a permanent block, or Block to

specify days and times to block access.

e. Day: choose the beginning and end ing day of the week that this block is

effective.

f. Time: choose the beginning and end time of day that this block is effec-

tive.

g. Enabl e: check this box to activate the block, or clear the check to disable

the block.

3 Click the Save button to save your changes.
4 Proceed to Configuring MAC Address Filtering

.

Touchstone® WTM552 Telephony Modem User’s Guide 42

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring MAC Address Filtering

Follow these steps to confi gure MAC Address filtering.

1 Click the Firewall link in the navigation menu, then click MAC Address Filter-

ing.

The MAC Address Filtering window appears.

2 Click the Add button to add a blank row to the filter list.
3 Enter the MAC address of the computer you want to add to the filter. Do not

enter colons or dashes in between the hex digits. See the sidebar for infor­mation about finding the MAC address of a computer.

Note: Make sure you enter the MAC address correctly. The Telephony Mo­dem may completely block access if you enter an incorrect address.

4 Click the Save button to save your changes.

Finding the MAC Address of a computer

Locate the operating system of the computer that you
want to add to the list and follow the instructions to find
its wireless MAC address.

Windows: open a Command Prompt window and type
ipconfig /all (and press Return). Locate the line that

begins with “Description” and contains the word “Wire­less.” The next line, which starts with “Physical Address, ”
contains a string of six hex numbers, separated by
dashes. This is the MAC address.

MacOS X: open a Terminal window and type ifconfig
(and press Return). Find the line that begins with “en1”
— this is the wireless adapter. The next line that begins
with “ether” contains the MAC address of the wireless
interface.

Linux: open a shell window and type ifconfig (and press
Return). The wireless interface is eth1 (unless there is no
Ethernet adapter, in which case the interface is eth0).

5 Proceed to Configuring the DMZ

.

Touchstone® WTM552 Telephony Modem User’s Guide 43

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring the DMZ

Certain Internet applications, such as gaming or video conferencing, may not work
properly with computers behind a firewall. F or these situations, the Telephony Mo­dem supports a “DMZ” feature that lets you place a single PC outside the firewall.

Note: A computer placed in the DMZ is not protected from attackers. Enable

the DMZ only when necessary and make sure the computer in the DMZ
has the latest security updates installed.

Follow these steps to place a computer in the DMZ.

1 Click the Firewall link in the navigation menu, then click DMZ.

The DMZ window appears.

2 Enter the IP address of the computer that you want to place in the DMZ in

the Private IP field.

3 Check the Enable box.
4 Click the Save button to save your changes.

The DMZ light on the Telephony Modem front panel lights up to remind you
that your computer is operating without firewall protection.

5 When you are finished using the DMZ, return to this screen, remove the

check from the Enable box, and click the Save button.

The DMZ light on the Telephony Modem front panel turns off.

6 Proceed to Configuring DDNS

.

Touchstone® WTM552 Telephony Modem User’s Guide 44

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring DDNS

The public IP addresses assigned to your Telephony Modem can change from time
to time. If you are providing services from your private network (using the Virtual
Servers feature), you should use Dynamic DNS (DDNS) to associate your current
IP address with a domain name. The Telephony Modem directly supports several
major DDNS providers.

After setting up a DDNS account, follow these steps to configure the Telephony Mo­dem to contact the DDNS provider.

1 Click the Firewall link in the navigation menu, then click DDNS.

The DDNS window appears.

2 Choose your DDNS provider from the DDNS Service drop-down menu.
3 Enter your DDNS account name, password, and DDNS domain name in the

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

appropriate fields.

4 Click the Update DDNS button.

Note: Y our domain name may not be immediately associated with your cur-

rent IP address. Updated DNS information takes some time to propagate
across the Internet.

5 Proceed to Configuring Wireless Bridging

.

Touchstone® WTM552 Telephony Modem User’s Guide 45

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Configuring Wireless Bridging

The Telephony Modem supports the Wireless Distribution System (WDS), a com­mon bridging standard that allows you to extend the range of a wireless network
by connecting several wireless routers.

Keep the following in mind when setting up wireless bridging:

• One device (in this case, the Telephony Modem) acts as the router. Other
wireless routers must be configured as Access Points. See the documenta­tion for your additional devices for instructions for using them as Access
Points.

• While the Telephony Modem has the ability to be configured as an Access
Point, doing so disables the router function and therefore disables Internet
access through the Telephony Modem.

• Each w ire less router must support WDS.

• The Router and each Access Point must use the same channel number and
security settings.

Jump directly to one of the following topics:

• Configuration Basics

• Accessing the Configuration Interface

• Configuring System Settings

• Setting Up Your WAN Connection

• Setting the MAC Address

• Setting Up DNS

• Configuring the LAN Channel and Name

• Configuring Wireless Security

• Configuring the Firewall
— Configuring Virtual Servers
— Configuring Client IP Filters
— Configuring MAC Address Filtering
— Configuring the DMZ

• Configuring DDNS

• Configuring Wireless Bridging

• If MAC address filtering is enabled, the router and each Access Point must
have the MAC addresses of the other devices in their access lists.

Follow these steps to set up wirel ess bridging. The steps as sume yo u ha ve already
configured the devices as described above.

1 In the Telephony Modem, click the Wireless Setup link in the navigation

menu, then click Wireless Bridging.

The Wireless Bridging window appears.

2 Check the Enable Wireless Bridging box.
3 (recommended) If you want to specify which Access Points are allowed to

connect to your network, check the Enable ONLY Specific Access Points to
Connect box and enter the MAC address of each Access Point in the AP1
through AP4 fields. You can enter up to four Access Points.

Note: Most wireless devices have their MAC addresses printed on a label at­tached to the back or bottom of the unit. Make sure you e n ter th e w ir e le ss
(WLAN) MAC address; the Ethernet and WAN connections have different
MAC addresses.

4 Click the Save button to save your changes.

Touchstone® WTM552 Telephony Modem User’s Guide 46

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

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 Modem.

Requirements

Make sure you have the following before attempting to configure your Ethernet
connection:

• Computer with:
— one of: Windows 98SE, Windows 2000, Windows ME, or Windows XP

(Windows 95 and Windows NT are not supported)

—Ethernet interface

• Ethe rnet 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 98SE

• TCP/IP Configuration for Windows 2000

• TCP/IP Configuration for Windows ME

• TCP/IP Configuration for Windows XP

Touchstone® WTM552 Telephony Modem User’s Guide 47

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

TCP/IP Configuration for Windows 98SE

Follow these steps to configure the TCP/IP settings on a Windows 98SE operating
system.

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.
2 Double click on the Network icon in the Control Panel.

3 Click the Configuration tab in the Network win dow to display the list of

Network Adapters.

Touchstone® WTM552 Telephony Modem User’s Guide 48

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

4 Highlight TCP/IP by clicking on it one time, then click on Properties.

5 Click the IP Address tab, click Obtain an IP address automatically , then

click OK.

Touchstone® WTM552 Telephony Modem User’s Guide 49

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

6 Click OK to accept the new settings, and OK again to close the Configura-

tion window.

7 You may have to restart your computer in order for your computer to obtain

a new IP address from the network.

—end—

Touchstone® WTM552 Telephony Modem User’s Guide 50

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

TCP/IP Configuration for Windows 2000

Follow these steps to configure the TCP/IP settings on a Windows 2000 operating
system.

Note: Dialog boxes shown on your computer may differ slightly from those

shown in this procedure.

1 From the computer , select Start > Settings > Network and Dial-up Con-

nections > Local Area Connection.

2 In the Local Area Connections Properties window, highlight TCP/IP by click-

ing on it one time, then click on Properties.
Note: If your computer has more than one Ethernet card, you may have to

select the appropriate Ethernet card in the Connect using: area of the Lo­cal Area Connection Properties window.

Touchstone® WTM552 Telephony Modem User’s Guide 51

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

3 Click Obtain an IP address automatically and Obtain DNS server ad-

dress automatically, then click OK.

4 Click OK to accept the new settings, and OK again to close the Configura-

tion window.

5 You may have to restart your computer in order for your computer to obtain

a new IP address from the network.

—end—

Touchstone® WTM552 Telephony Modem User’s Guide 52

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

TCP/IP Configuration for Windows ME

Follow these steps to configure the TCP/IP settings on a Wind ows ME operating sys­tem.

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.
2 Double click on the Network icon in the Control Panel.

3 Click the Configuration tab in the Network win dow to display the list of

Network Adapters.

Touchstone® WTM552 Telephony Modem User’s Guide 53

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

4 Highlight TCP/IP by clicking on it one time, then click on Properties.

5 Click the IP Address tab, then click OK.

Touchstone® WTM552 Telephony Modem User’s Guide 54

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

6 Click OK to accept the new settings, and OK again to close the Configura-

tion window.

7 You may have to restart your computer in order for your computer to obtain

a new IP address from the network.

—end—

Touchstone® WTM552 Telephony Modem User’s Guide 55

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

TCP/IP Configuration for Windows XP

Follow these steps to configure the TCP/IP set tings on a Windows XP operating sys­tem.

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 on the Network Connections icon in the Control Panel.

2 Click the Configuration tab in the Network win dow to display the list of

Network Adapters.

Touchstone® WTM552 Telephony Modem User’s Guide 56

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

3 Highlight TCP/IP by clicking on it one time, then click on Properties.

4 Click the IP Address tab, click Obtain an IP address automatically , then

click OK.

Touchstone® WTM552 Telephony Modem User’s Guide 57

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

5 Click OK to accept the new settings, and OK again to close the Configura-

tion window.

6 You may have to restart your computer in order for your computer to obtain

a new IP address from the network.

—end—

Touchstone® WTM552 Telephony Modem User’s Guide 58

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Using the Telephony Modem

This chapter describes the controls and features available on the Touchstone Tele­phony Modem, and covers basic troubleshooting procedures.

• Setting up Your Computer to Use the Teleph ony Modem

• Indicator Lights for the WTM552A/B Models

• Indicator Lights for the WTM552G/H Models

• Using the Reset Buttons

Setting up Your Computer to Use the Telephony Modem

Follow the instructions in the information packet supplied by your cable company.
Contact your cable company if you need help setting up your computer.

Touchstone® WTM552 Telephony Modem User’s Guide 59

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Indicator Lights for the WTM552A/B Models

The Touchstone T el e phony Modem has 13 LEDs to assist in troubleshooting.

Wiring Problems

If the Telephony Modem begins flashing all its lights for more than 10 seconds, this

Power

DS

US

Online

Link

LAN 1

LAN 2

LAN 3

LAN 4

WLAN

DMZ

Tel ephone 1

Telephone2

indicates a problem with the telephone wiring — the red and green wires may be
shorted (touching), or there may be undesired voltage on the lines. If this pattern
persists for more than 10 seconds, disconnect the telephone lines from the Tele­phony Modem, then call a wiring technician for assistance.

Patterns: Normal Operation (WAN)

The following table shows light patterns for the cable connection during normal op­eration.

Mode Power DS US Online Link

On = Computer

Connected

Off = Computer

not connected

Flash =

Computer

Activity

AC Power On

On =

Connected to

the Internet

Flash = Not

connected to

the Internet

On =

Connected to

the Internet

Flash = Not

connected to

the Internet

On =

Internet

Available

Off =

Internet not

available

Touchstone

Telephony

Modem

No AC
Power

TM

Firmware

Upgrade

Off Off Off Off Off

On Flash Flash On

(normal

operation)

Touchstone® WTM552 Telephony Modem User’s Guide 60

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Patterns: Normal Operation (LAN and telephone)

The following table shows light patterns for the Ethernet and wireless LANs, and the
telephones, during normal operation.

Mode LAN1 - LAN4 WLAN DMZ

On = Computer

Connected

Off = Computer

AC Power

No AC Power Off Off Off Off

Firmware

Upgrade

not connected

Flash =

Computer

Activity

(normal

operation)

On = Computer

Connected

Off = Computer

not connected

Flash = Com-

puter Activity

(normal

operation)

On = DMZ

enabled

Off = DMZ not

enabled

(normal

operation)

Tel. 1/

Tel. 2

On = On-hook

Flash = Off-hook

Off = disabled

(normal

operation)

Touchstone® WTM552 Telephony Modem User’s Guide 61

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Indicator Lights for the WTM552G/H Models

The Touchstone T elephon y Modem has fourteen indicat or lights to assist i n trouble­shooting.

Wiring Problems

If the Telephony Modem begins flashing all its lights for more than 10 seconds, this
indicates a problem with the telephone wiring — the red and green wires may be
shorted (touching), or there may be undesired voltage on the lines. If this pattern
persists for more than 10 seconds, disconnect the telephone lines from the Tele­phony Modem, then call a wiring technician for assistance.

Patterns: Normal Operation (LAN and Telephone)

The following table shows light patterns for the Ethernet and wireless LANs, and the
telephones, during normal operation.

Mode LAN1 - LAN4 WLAN DMZ Tel. 1/Tel. 2

On = Computer

Connected

Off = Computer

AC Power

No AC Power Off Off Off

Firmware

Upgrade

not connected

Flash =

Computer

Activity

(normal

operation)

On = Computer

Connected

Off = Computer

not connected

Flash =

Computer

Activity

(normal

operation)

On = DMZ

enabled

Off = DMZ not

enabled

(normal

operation)

On = On-hook

Flash = Off-hook

Off = disabled

On = On-hook

Flash = Off-hook

Off = disabled

Off

Touchstone® WTM552 Telephony Modem User’s Guide 62

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Indicator Lights: Normal Operation (WAN and Battery)

The following table shows light patterns during normal operation.

Mode Power DS US Online Link Battery

AC Power

Good

No AC
Power

Battery

Installed

No AC
Power

No

Battery

On =

Connected

to the

Internet

On

Flash =

Not

connected

to the

Internet

Flash Off Off Off Off

Off Off Off Off Off Off

On =

Connected

to the

Internet

Flash =

Not

connected

to the

Internet

On =

Internet

available

Off =

Internet

not

available

On =

Computer

connected

Off =

Computer not

connected

Flash =

Computer

activity

On =

Battery

good or

Off =

Battery

missing

Flash =

Battery

Off =

Battery

power

Flash =

Battery

low

bad

bad

Firmware

Upgrade

On Flash Flash On

(normal

operation)

(normal

operation)

Touchstone® WTM552 Telephony Modem User’s Guide 63

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Indicator Lights: Startup Sequence

The following table shows the Telephony Modem light patterns during each phase
of the startup sequence. There are two phases of startup; the T elephony phase and
the cable modem phase. Both are outlined below.

Power,

DS, US,

Link

Online

Off Off Off Off Off No power to Cable Modem

Flash Flash Flash Flash Flash Power-on Self Test

On On Flash Off Off

On On Off Flash Off

On On Flash Flash Off Activating telephone service

* = Battery LED only applies to those models with battery backup

Telephone

Battery* Description

12

See “Cable Modem Start Up Sequence” Below

Retrieving telephone network

information

Retrieving telephone line

information

Normal Operation

Cable Modem Start Up Sequence

DS US Online Link Description

Flash Off Off Off Downstream search

On Flash Off Off Downstream found; upstream search

Downstream and Upstream found;

On On Flash Off

retrieving setup information from cable

operator

Touchstone® WTM552 Telephony Modem User’s Guide 64

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Using the Reset Buttons

Use the Router Reset button to reset the Ethernet and wireless c onnections with­out affecting the cable or telephony connections. Y ou may need to reset the router
if you are having problems connecting to the Internet, but the phones are working.
To reset the Telephony Modem to factory defaults, hold the Router Reset button

WTM552A/B

4,3,2,1

for about 8 seconds.
Use the TM Reset button, on the back of the Telephony Modem, to reset the mo-

dem as if you power cycled the entire unit. The phones will be out of service until
the Telephony Modem finishes reconnecting to the cable system. You may need to
reset the Telephony Modem if you are having problems connecting to the Internet
or with the phones. This button should be used rarely.

The TM Reset button is recessed to prevent accident al resets. Use a pointed non-

metallic object to press this button.

TM Reset

WTM552G/H

Router Reset

The diagram to the left shows the location of the Reset buttons.

Touchstone® WTM552 Telephony Modem User’s Guide 65

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Troubleshooting

The information in this chapter may help you to clear up common problems.

Viewing Connection Information

The web-based configuration interface provides screens that can help to trouble­shoot connectivity problems. The default IP address of the Telephony Modem is

192.168.2.1 — if you have changed the IP address, remember to enter the
changed address in your browser.

Viewing the DHCP Client List

The DHCP client list shows all computers that are currently connected to the Tele­phony Modem and have received an IP address from the router. This information
can help you to troubleshoot connectivity problems or to se e whether ot her people
have connected to an unsecured network.

To view the list, choose LAN Setup from the navigation menu and then DHCP Cli-
ent List.

The list shows the IP address assigned to each computer, the host name (the name
given by the computer’s owner), and the MAC address of that computer. Click the

Refresh button to update the listing.
Note: The DHCP client list does not show devices that have manually assigned

IP addresses.

Touchstone® WTM552 Telephony Modem User’s Guide 66

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Viewing the Security Log

The security log keeps a list of system- and firewall-related events. Y ou can use the
security log to troubleshoot connectivity problems and to view possible intrusion at­tempts.

To view the security log, choose Firewall from the navigation menu and then Se-
curity Log.

Click the Refresh button to update the listing. Click the Save button to download
the current log to your computer (the file is named log_web.txt). Click the Clear
button to clear both the system and firewall logs.

Note: You may have to scroll down to access the buttons.

Touchstone® WTM552 Telephony Modem User’s Guide 67

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Backing Up and Restoring the Configuration

You can sa ve a copy of the current Telephony Modem router configuration to a local
computer. Once you have configured the Telephony Modem as desired, you should
back up the configuration so that you can restore it later if needed.

Backing Up

Follow these steps to back up the configur ation.

1 Click the Utilities link in the navigation menu, then click Save/Backup Set-

tings.

The Save/Backup Settings window appears.

2 Click the Save button.

The Telephony Modem downloads a file called admcfg.cfg to your com­puter.

3 Copy the admcfg.cfg file to a safe location. You can rename the file, if de-

sired, to help you find it in the future.

Restoring

Follow these steps to back up the configur ation.

1 Click the Utilities link in the navigation menu, then click Restore Previous-

Settings.

The Restore Previous Settings window appears.

2 Click the Choose File button.

Your browser prompts you to find the saved configuration file.

3 After locating the saved configuration file, click the Restore button.

The Telephony Modem restarts the router with the restored con figuration.

Touchstone® WTM552 Telephony Modem User’s Guide 68

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Resetting the Telephony Modem Router

The router can be reset in two ways: a “normal” reset that simply restarts the rout­er (without affecting any phone calls in progress), and a “factory” reset that erases
the current configuration to the factory defaults.

Restarting the Router

To restart the router, you can push the Router Reset button on the back of the Te­lephony Modem. If your Telephony Modem is mounted in an inconvenient location,
or you need to restart it remotely, you can use the Restart Router page.

To restart the router remotely, cl ick the Utilities link i n the na vigation menu, then
click Restart Router. When the page appears, click the Restart Router button.
The Telephony Modem shows a confirmation dialog; click OK to restart the router.

Resetting the Router to Factory Defaults

T o reset the router to factory defaults, y ou can press and hold the Router R eset but­ton on the back of the Telephony Modem for about eight seconds. You may need to
do this if a misconfiguration has locked out all ac cess. If you c an access t he router
and want to restart it remotely, you can use the Restore Factory Defaults page.

T o restore factory defaults remotely, click the Utilities link in the navigation menu,
then click Restore Factory Defaults. When the page appears, click the Restore
Defaults button. The Telephony Modem shows a confirmation dialog; click OK to
erase the configuration to factory defaults.

The router resets itself after erasing the current configuration.
Note: If you want to restore the current configuration after restoring factory

defaults, see Backing Up and Restoring the Configuration

Touchstone® WTM552 Telephony Modem User’s Guide 69

first.

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

General Problems and Solutions

The Telephony Modem is plugged in, but the Power light is off.

Check all power connections. Is the power cord plugged in firmly at both
ends?

If you plugged the power cord into a power strip, make sure the strip is
switched on.

Avoid using an outlet controlled by a wall switch, if possible.
Finally, check the fuse or circuit breaker panel.

I’m not getting on the Internet (all connections).

It may take over 30 minutes to establ ish a connection the first time you
power up your Telephony Modem, especially when many people are online.
Always leave your Telephony Modem plugged into AC power and connected
to the cable system.

Check the front panel lights:

•The Power and Online lights should be on.

•The Link light should be either on or blinking.

•If the Power light blinks for more than 30 minutes, call your cable
company for assistance.

Check your cable connections. Connectors should be finger-tight. The coax

cable should not be pinched, kinked, or bent sharply—any of these can

cause a break or short in the cable (you may have to replace the cable). If
you have one or more splitters between the Telephony Modem and CATV
outlet, remove the splitters and connect the Telephony Modem directly to
the outlet.

Proceed to the Ethernet or wireless solutions (next page) if necessary.

Touchstone® WTM552 Telephony Modem User’s Guide 70

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

I’m not getting on the Internet. (Ethernet)

If you are using a hub, is the hub turned on?
Are you using the right type of Ethernet cable

? Use the supplied cable for
direct connection to a computer; use a cross-over cable for connection to a
hub.

Press the Router Reset button on the back of the Telephony Modem.
A misconfiguration could lock out all access to the Telephony Modem router.

If you think this has happened, see Resetting the Router to F actory Defaults

I’m not getting on the Internet. (Wireless)

Check the indicator lights (see Using the Telephony Modem
light should be on.

Does your con nection ut ility discover your wireles s LAN? If yo u turned off
“Broadcast SSID” (see Configuring the LAN Channel and Name
manually enter the name of your wireless LAN in the connection utility.

Change your security mode to “WEP” or “disabled” (see Configuring Wireless

Security). If you use “disabled,” enable one of the other security modes as

soon as you find the problem.
A misconfiguration could lock out all access to the Telephony Modem router.

If you think this has happened, see Resetting the Router to F actory Defaults

My wireless Internet connection stops working sometimes.

This is usually caused by interference — two common sources are 2.4GHz
“remote” telephones and microwave ovens. If you cannot remove the inter­fering product, try using a different channel or setting Protected Mode (see

Configuring the LAN Channel and Name

for both features).

.

) — the WLAN

) you need to

.

I can get on the Internet, but everything is slow.

If the Web site you are visiting is very popular , that site may be having trou­ble servicing all the requests. If other sites download quickly, wait for a few
minutes and try again. Usage during peak hours may also affect the con­nection speed.

Touchstone® WTM552 Telephony Modem User’s Guide 71

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Other communications on the LAN, or interference with wireless connec­tions, may slow down your connection.

I don’t have dial tone when I pick up my phone, why?

In order for telephone service to be functional on the Telephony Modem,
telephone service must have been purchased from the service provider and
configured on your Telephony Modem. The following steps should help in
identifying the source of the problem.

1 Is the Power LED lit?

• If not, check to make sure the Telephony Modem is plugged in and
the outlet has power.

• If the LED is lit, go to the next step.

2 Is the Online LED lit?

• If not, check the coax connection at the Telephony Modem and the
wall. Ensure they are connected and tight. If they are and y ou do not
have dial tone, contact your service provider.

• If the Online LED is lit, go to the next step.

3 Is the Telephone (Telephone 1 or Telephone 2) LED lit?

• If not, phone service has not been set up on that line. Contact your
service provider.

• If it is blinking, there is a phone off hook somewhere in the house.
Find that phone and hang it up.

• If it is lit, go to the next step.

4 Is the phone plugged directly into the Telephony Modem?

• Make sure the phone is plugged into the port on the back of the Te­lephony Modem labeled “Tel 1” for line 1, and “Tel 2” for line 2.

• If so, try a different phone. Make sure the new phone is a working
phone.

• If a known good phone is used and you still don’t have dial tone, try
a different phone cable. If a new phone and cable do not restore dial
tone, call your service provider.

Touchstone® WTM552 Telephony Modem User’s Guide 72

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

5 Is the Telephony Modem plugged into a wall outlet?

• If so, unplug the RJ-11 connector at the back of the Telephony Mo­dem and plug in a known working phone. If you now have dial tone,
the problem is with the house wiring. Contact your cable company or
a qualified wiring technician to correct the house wiring. If you still
do not have dial tone, contact your service provider.

Touchstone® WTM552 Telephony Modem User’s Guide 73

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Glossary

The following is a list of common cable and networking terms.

Amp-hour (Ah)

A measure of battery capacity. For example, a 1.0Ah battery can nominally
supply one Ampere of current for one hour.

Category 5 (Cat5)

A high-quality type of cable, used for Fast Ethernet (100BaseT) connec­tions. When purchasing Ethernet cables, always look for Category 5 cable.

Coaxial cable (coax)

A thin wire, used to connect your television and Telephony Modem to the
cable TV system. Yo u can buy coax from any electronics retailer and many
discount stores.

CPE

Customer Premise Equipment. This is the equipment that is plugged in to
the Telephony Modem; typically a computer or hub.

Cross-over

An Ethernet cable used to connect two hubs (or a hub and a cable modem)
together. Also, some Ethernet hubs may have built-in cross-over on one or
more ports (which eliminates the need for a cross-over cable).

DHCP

Dynamic Host Configuration Protocol. An IP protocol used to provide an IP
address and location of services (such as DNS and TFTP) needed by a
device connecting to the network. DHCP allows the cable company to con­figure your computer’s networking software for you.

DNS

Domain Name Service (Server). An IP service that associates a domain
name (such as www.example.com) with an IP address.

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.

Touchstone® WTM552 Telephony Modem User’s Guide 74

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

DOCSIS

Data Over Cable System Interface Speci fication. The interoperability st an­dards 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 Modem.

Firewall

A hardware or software device that prevents unauthorized access to a pri­vate network from the Internet. The WTM552 provides a built-in firewall.

Gateway

The device, usually a router, that connects devices on a given IP subnet to
other IP subnets.

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.

Touchstone® WTM552 Telephony Modem User’s Guide 75

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

Hub

A box with several Ethernet or USB connectors. Ethernet hubs provide a
common point of contact for all connected devices; USB hubs allow you to
add peripherals without installing a USB card in your computer.

IP address

A number assigned to your computer by your cable company, used to iden­tify your computer to other systems on the Internet.

ISDN

Integrated Services Digital Network. A digital telephony standard that pro­vides 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 Modem’s MAC address to authorize
access to the Internet. The MAC address is printed on a label on the bottom
of your Telephony Modem.

Protocol

A set of rules and formats that determines the communication behavior of
network entities at a given layer.

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 ha v e 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.

Touchstone® WTM552 Telephony Modem User’s Guide 76

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

RF

Abbreviation for Radio Frequency. Some literature refers to coax as “RF
cable” and the connectors as “RF connectors.”

RJ-11

A standard 4-pin modular connector, commonly used in North America for
connecting telephones.

RJ-45

A standard 6-pin modular connector, commonly used on Ethern et cabl e. 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 Modem. 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 Modem
into a switched outlet to avoid disruptions.

TCP/IP

Transmission Control Protocol/Internet Protocol. The protocols used to
facilitate communications across one or more connected networks.

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 docu­mentation may refer to this as the return path or reverse path.

Touchstone® WTM552 Telephony Modem User’s Guide 77

Getting Battery Wireless Ethernet

Safety Started Installation Installation Configuration Configuration Usage Troubleshooting Glossary

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® WTM552 Telephony Modem User’s Guide 78

Touchstone®

WTM552 Telephony Modem
User’s Guide

© 2005–2007 ARRIS
All rights reserved

All information contained in this document is subject to
change without notice. ARRIS reserve s the right to make
changes to equipment design or program components, as
progress in engineering, manufacturing methods, or
other circumstances may warrant.

ARRIS, Touchstone, and the ARRIS logo are trademarks
or registered trademarks of ARRIS Group. All other
trademarks and registered trademarks are the property
of their respective holders.

Release 5 Standard 1.1
April 2007