Arris WTM552 TM552_User_Guide User Manual WTM552: Guide

User Manual: Arris WTM552 WTM552: User Guide

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Touchstone® WTM552 Telephony Modem User’s Guide

Touchstone® WTM552 Telephony Modem User’s Guide 1

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 Touchstone WTM552 Telephony Modem brings it all to you

faster and more reliably. All while providing toll quality Voice over IP telephone ser-

vice and both wired and wireless connectivity. Some models even provide a Lithi-

um-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 Telephony Modem

Configuring Your Wireless Connection

Configuring Your Ethernet Connection

Using the Telephony Modem

Troubleshooting

Glossary

Export Regulations

This product may not be exported outside the U.S. and Canada without U.S. Department of Commerce, Bureau of Export Admin-

istration authorization. Any export or re-export by the purchaser, directly or indirectly, in contravention of U.S. Export Adminis-

tration Regulation is prohibited.

The information in this document is subject to change without notice. The statements, configurations, technical 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 responsibility for their applications of any products specified in this document. The information in this docu-

ment is proprietary to ARRIS.

ARRIS, Touchstone, and the ARRIS logo are trademarks or registered trademarks of ARRIS Group. All other trademarks and reg-

istered trademarks are the property of their respective holders.

Release 5 Standard 1.1 April 2007

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Safety Requirements

ARRIS Telephony Modems comply with the applicable requirements for

performance, construction, labeling, and information when used as

outlined below:

• The Telephony Modem is designed to be connected directly to a

telephone.

• Connecting the Telephony Modem to the home's existing tele-

phone wiring should only be performed by a professional in-

staller.

• Do not use product near water (i.e. wet basement, bathtub,

sink or near a swimming pool, etc.), to avoid risk of electrocu-

tion.

• Avoid using and/or connecting the equipment during an electri-

cal storm, to avoid risk of electrocution.

• Use only power supply and power cord included with the equip-

ment.

• 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 Electrical Code) Article 820. In

the European Union and in certain other countries, CATV instal-

lation 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 in-

tended 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, spe-

cial attention should be given that the installation is in accor-

dance 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 Power Conver-

sion) 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 proper-

ly 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.

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 Telephony

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.

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European Compliance

This product complies with the provisions of the Electromagnetic Com-

patibility (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 may be obtained from: ARRIS

International, Inc., 3871 Lakefield Drive, Suite 300, Suwanee, GA

30024.

As indicated by this symbol, disposal of this prod-

uct 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 Te-

lephony Modem the Directive requires that this

product must not be disposed as unsorted munic-

ipal waste, but rather collected separately and dis-

posed 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 equip-

ment.

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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

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What’s in the Box?

Make sure you have the following items before proceeding. Call your cable company

for assistance if anything is missing.

• Telephony 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

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Items You Need

If you are installing the Telephony Modem yourself, make sure you have the follow-

ing items on hand before continuing:

•Telephony modem package: see What’s in the Box? for a list of items in

the package.

•Coaxial cable (coax): as shown in the image to the left, this is a thin cable

with a connector on each end. It is the same kind of wire used to connect

to your television for cable TV. You can buy coax from any electronics retailer

and many discount stores; make sure it has connectors on both ends. There

are two types of connectors, slip-on and screw-on; the screw-on connectors

are best for use with your Telephony 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. You may need a splitter if you have 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 up. Read this

information carefully and contact your cable company if you have any ques-

tions.

Phone Cable

Coax Cable

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Getting Service

Before trying to use your new Telephony Modem, contact your local cable company

to establish an Internet account and telephone service. When you call, have the fol-

lowing 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 number 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 down-

load 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?

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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 Transport recommended) or MacOS X. A supported

Ethernet or wireless LAN connection must be available.

Linux/other Unix

Hardware drivers, TCP/IP, and DHCP must be enabled in the kernel. A supported

Ethernet or wireless LAN connection must be available.

About this Manual

This manual is written to cover all of the different WTM552 models. Your model may

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

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Ethernet or Wireless?

There are two ways to connect your computer (or other equipment) to the Telepho-

ny 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: To connect more than four computers to the WTM552 through the Ether-

net ports, you will need an Ethernet hub (available at computer retail-

ers).

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-

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 Mo-

dem 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. You can use the wireless connection if your

computer has a built-in or aftermarket wireless card.

Note: To 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.

Ethernet Cable

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What About Security?

Having a high-speed, always-on connection to the Internet requires a certain

amount of responsibility to other Internet users—including the need to maintain a

reasonably secure system. While no system is 100% secure, you can use the fol-

lowing tips to enhance your system’s security:

• Keep your operating system updated with the latest security patches. Run

the system update utility at least weekly.

• Keep your email program updated with the latest security patches. In addi-

tion, avoid opening email containing attachments, or opening files sent

through chat rooms, whenever possible.

• Install a virus checker and keep it updated.

• Avoid providing web or file-sharing services over your Telephony Modem.

Besides certain vulnerability problems, most cable companies prohibit run-

ning servers on consumer-level accounts and may suspend your account for

violating your terms of service.

• Use the cable company’s mail servers for sending email.

•Avoid using proxy software unless you are certain that it is not open for

abuse by other Internet users (some are shipped open by default). Crimi-

nals can take advantage of open proxies to hide their identity when breaking

into other computers or sending spam. If you have an open proxy, your ca-

ble 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.

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Battery Installation and Replacement

(WTM552G/H Models Only)

WTM552G and WTM552H Telephony Modems may optionally include one of two

types of Lithium-Ion batteries: a 2.2 Amp-hour (Ah) battery or a 4.4 Ah battery.

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

http://www.yourbroadbandstore.com/.

Product IDs are:

• 2.2 Ah battery: 718003

• 4.4 Ah battery: 718005

2.2 Ah Battery

4.4 Ah Battery

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2.2 Ah Battery Installation and Replacement

This model of the Telephony Modem has the ability to provide battery backup in the

event of a local power loss. The battery backup is not intended to take the place of

AC power. The 2.2Ah Lithium-Ion battery pack can be inserted into the Telephony

Modem. Use this procedure to install and to replace the backup battery.

Action

1Insert 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.

2Hold 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.

Latch

End

Battery Slot

Battery Guide

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3Push the battery pack into the bay until it seats into place. The following di-

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.

4Replace 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 op-

posite 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.

Battery

Opening

Receiver

Slots Hinge Tabs

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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

1Insert 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.

2Hold 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 will not insert completely into 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.

WRONG WRONG RIGHT

Latch

End

Battery Guide Battery

Pull Strap

Hinge Tabs

Receiver

Slots

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3Push the battery pack into the bay until it latches into place. The diagram

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.

4Replace 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.

Battery

Opening

Receiver

Slots

Battery

Pull Strap

Hinge Tabs

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Installing and Connecting Your

Telephony Modem

Before you start, make sure that:

• You have contacted your cable company and verified 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 Telephony Mo-

dem to house wiring. Incumbent telephone service must be physically

disconnected at the outside interface box before making any

connections.

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Front Panel WTM552A/B

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

GUS: indicates upstream connectivity

HDS: indicates downstream connectivity

IPower: indicates whether AC power is available to the unit

Power

Online

Link

LAN 1

LAN 2

LAN 3

LAN 4

WLAN

DMZ

Tel ephone 1

Telephone 2

Touchstone

Telephony

Modem

WTM552A/B

AB C

F G H I

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Front Panel WTM552G/H

The front of the Telephony Modem has the following indicators:

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

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

G Online: indicates internet data transmission status

HUS: indicates upstream connectivity

IDS: indicates downstream connectivity

JPower: indicates whether AC power is available to the unit

WTM552G/H

BC D

GHGI J

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Rear Panel

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

DEthernet connectors: for use with a computer LAN port

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

4,3,2,1

WTM552

A/B

D E

ABG

WTM552

G/H

D E

ABG

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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 exten-

sion 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 (re-

duces) the signal available to the Telephony Modem. A large number of split-

ters can slow down the Internet connection and even affect your telephone

service.

• Can you easily run cables between the Telephony Modem’s location and the

phones?

• If you are connecting devices to the Ethernet ports, can you easily run ca-

bles between the Telephony Modem’s location and those devices?

• If you want to mount the Telephony Modem on a wall, does the location pro-

vide 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 con-

nection range is typically 100–200 feet (30m–65m). A number of factors

can affect connection range, as described below.

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Factors Affecting Wireless Range

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

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 unwant-

ed users to find and connect to your network.

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 omnidirec-

tional 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 range: • 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)

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Mounting the Telephony Modem

You can either mount the Telephony Modem on a wall or place it on a desktop. For

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 mate-

rials 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

tapping

screws (included)

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

use)

• wall-mount template (included with the Telephony Modem Quick Installation

Guide)

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

wall)

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Instructions

Wall-mounting instructions

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

the Telephony Modem and secure in place with transparent tape.

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

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

3If 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.

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

desired. Slip both mounting slots (in the back of the Telephony Modem) over

the screws, then slide the case down until the narrow end of the keyhole slot

contacts the screw shaft.

5Proceed to Connecting the Telephony Modem.

Desktop mounting instructions

1Position 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

2Proceed to Connecting the Telephony Modem.

Step 1 Step 2

Step 3 Step 4

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Connecting the Telephony Modem

WARNING: Connecting the Telephony Modem to the home's existing

telephone wiring should only be performed by a professional install-

er. 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.

1Thread 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.

2Connect 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 con-

nections by hand, then tighten an additional 1/8 turn with a wrench.

Note: For best performance, use high-quality coax cable and minimize or

eliminate splitters between the cable jack and the Telephony Modem.

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

of the Telephony 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 if the Power

light does not turn on.

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

the Telephony Modem, (D) and the other end to the Ethernet port on a com-

puter, hub, or broadband router.

Note: If you are connecting to a computer, use the Ethernet cable included

in the Telephony Modem package.

5Connect 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.

WTM552

A/B/C

WTM552

G/H

D E

ABG

4,3,2,1

D E

ABG

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Configuring Your Wireless Connection

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 se-

curity 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

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

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Configuration Basics

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

ing screen shows the various components of the interface.

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.

➀

➁

➂

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

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Accessing the Configuration Interface

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

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

dem.

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

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

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

Status screen:

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

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

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

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

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

5Proceed to Configuring System Settings.

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Configuring System Settings

1Click the Utilities link (at the bottom of the Navigation menu) to open the

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

screen:

2Make 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: Select the proper time zone for your location. The Telephony

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

3Scroll 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 but-

ton.

4Proceed to Setting 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

•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

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Setting Up Your WAN Connection

Follow these steps to set up your WAN connection.

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

Type.

The Connection Type screen appears:

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

ble companies require the Dynamic connection type. If your cable company

requires a different connection type, you should have an information sheet

that shows the proper connection type to select and other information need-

ed to set up the connection.

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

down in the browser to see the Next button). The Telephony Modem displays

a screen showing further settings for your connection type. Follow the ap-

propriate link for your connection type:

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

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—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 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.

d. Proceed to Configuring the LAN Channel and Name.

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PPPoEa. 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.

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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.

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Setting the MAC Address

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

er. In some cases, you may need to change the MAC address of the Telephony Mo-

dem’s WAN port. Follow these steps only if your cable company requires this

change.

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

The MAC address window appears:

2If 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.

3If 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 ad-

dress, see Finding the MAC Address of a computer.

4Click the Save button to continue.

5To configure DNS settings, proceed to Setting Up DNS. Otherwise, proceed

to 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

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Setting Up DNS

Follow these steps to set up DNS.

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

The DNS screen appears:

2If 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.

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

ISP.

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

5Proceed to 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

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Configuring the LAN Channel and Name

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

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

2Make 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: Give your wireless LAN any name you desire. For best security, do

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

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

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.

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

3Click the Save button.

4Proceed to 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

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Configuring Wireless Security

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

2In the Security Mode menu, choose WPA unless you have wireless equip-

ment that does not support WPA; in that case, choose 128-bit WEP (more

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.

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

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3Enter 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 items unless required by your oth-

er wireless equipment.

4Click the Save button.

You have completed the basic configuration steps. Unless your cable operator re-

quires 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 follows:

•Configuring the Firewall

•Configuring DDNS

•Configuring Wireless Bridging

If you have any problems, proceed to Troubleshooting.

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Configuring the Firewall

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

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 complete-

ly 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 com-

puters specifically authorized to connect.

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

Proceed to the next page to begin configuring the firewall.

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

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Configuring Virtual Servers

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

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

The Virtual Servers window appears.

2Proceed as follows:

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

down) to save your changes.

4Proceed to Configuring Client IP Filters.

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 ser-

vice. 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.

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Configuring Client IP Filters

Follow these steps to configure client IP filters.

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

The Client IP Filters window appears.

2Fill 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 TCP, 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 ending 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. Enable: check this box to activate the block, or clear the check to disable

the block.

3Click the Save button to save your changes.

4Proceed to Configuring MAC Address Filtering.

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Configuring MAC Address Filtering

Follow these steps to configure MAC Address filtering.

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

ing.

The MAC Address Filtering window appears.

2Click the Add button to add a blank row to the filter list.

3Enter 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 infor-

mation about finding the MAC address of a computer.

Note: Make sure you enter the MAC address correctly. The Telephony Mo-

dem may completely block access if you enter an incorrect address.

4Click the Save button to save your changes.

5Proceed to Configuring the DMZ.

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 “Wire-

less.” 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).

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Configuring the DMZ

Certain Internet applications, such as gaming or video conferencing, may not work

properly with computers behind a firewall. For these situations, the Telephony Mo-

dem 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.

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

The DMZ window appears.

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

the Private IP field.

3Check the Enable box.

4Click 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.

5When 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.

6Proceed to Configuring DDNS.

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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 Mo-

dem to contact the DDNS provider.

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

The DDNS window appears.

2Choose your DDNS provider from the DDNS Service drop-down menu.

3Enter your DDNS account name, password, and DDNS domain name in the

appropriate fields.

4Click the Update DDNS button.

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

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

across the Internet.

5Proceed to Configuring Wireless Bridging.

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

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Configuring Wireless Bridging

The Telephony Modem supports the Wireless Distribution System (WDS), a com-

mon 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 documenta-

tion 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 wireless router must support WDS.

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

security settings.

• 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 wireless bridging. The steps assume you have already

configured the devices as described above.

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

menu, then click Wireless Bridging.

The Wireless Bridging window appears.

2Check 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 at-

tached to the back or bottom of the unit. Make sure you enter the wireless

(WLAN) MAC address; the Ethernet and WAN connections have different

MAC addresses.

4Click the Save button to save your changes.

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

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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 Tele-

phony 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

• Ethernet cable (supplied)

• IP address, subnet, gateway, and DNS information for installations not using

DHCP

How to use this chapter

The following list shows the procedures for modifying the TCP/IP settings on the

computer. The procedure is slightly different depending on the operating system

that you are using. Please ensure you are using the correct steps for the operating

system on your computer. Follow the links below for instructions to configure your

ethernet connection on your operating system.

•TCP/IP Configuration for Windows 98SE

•TCP/IP Configuration for Windows 2000

•TCP/IP Configuration for Windows ME

•TCP/IP Configuration for Windows XP

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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.

1From the computer, select Start > Settings > Control Panel.

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

3Click the Configuration tab in the Network window to display the list of

Network Adapters.

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

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

click OK.

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

tion window.

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

a new IP address from the network.

—end—

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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.

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

nections > Local Area Connection.

2In 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 Lo-

cal Area Connection Properties window.

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

dress automatically, then click OK.

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

tion window.

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

a new IP address from the network.

—end—

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TCP/IP Configuration for Windows ME

Follow these steps to configure the TCP/IP settings on a Windows ME operating sys-

tem.

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

shown in this procedure.

1From the computer, select Start > Settings > Control Panel.

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

3Click the Configuration tab in the Network window to display the list of

Network Adapters.

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

5Click the IP Address tab, then click OK.

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

tion window.

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

a new IP address from the network.

—end—

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TCP/IP Configuration for Windows XP

Follow these steps to configure the TCP/IP settings on a Windows XP operating sys-

tem.

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

shown in this procedure.

1From the computer, select Start > Settings > Control Panel and double

click on the Network Connections icon in the Control Panel.

2Click the Configuration tab in the Network window to display the list of

Network Adapters.

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

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

click OK.

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

tion window.

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

a new IP address from the network.

—end—

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Using the Telephony Modem

This chapter describes the controls and features available on the Touchstone Tele-

phony Modem, and covers basic troubleshooting procedures.

•Setting up Your Computer to Use the Telephony 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.

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Indicator Lights for the WTM552A/B Models

The Touchstone Telephony 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

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 Tele-

phony Modem, then call a wiring technician for assistance.

Patterns: Normal Operation (WAN)

The following table shows light patterns for the cable connection during normal op-

eration.

Mode Power DS US Online Link

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

On = Computer

Connected

Off = Computer

not connected

Flash =

Computer

Activity

No AC

Power Off Off Off Off Off

Firmware

Upgrade On Flash Flash On (normal

operation)

Power

Online

Link

LAN 1

LAN 2

LAN 3

LAN 4

WLAN

DMZ

Telephone 1

Telephone2

Touchstone

Telephony

Modem

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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

AC Power

On = Computer

Connected

Off = Computer

not connected

Flash =

Computer

Activity

On = Computer

Connected

Off = Computer

not connected

Flash = Com-

puter Activity

On = DMZ

enabled

Off = DMZ not

enabled

On = On-hook

Flash = Off-hook

Off = disabled

No AC Power Off Off Off Off

Firmware

Upgrade (normal

operation) (normal

operation)

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Indicator Lights for the WTM552G/H Models

The Touchstone Telephony Modem has fourteen indicator lights to assist in trouble-

shooting.

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 Tele-

phony 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

AC Power

On = Computer

Connected

Off = Computer

not connected

Flash =

Computer

Activity

On = Computer

Connected

Off = Computer

not connected

Flash =

Computer

Activity

On = DMZ

enabled

Off = DMZ not

enabled

On = On-hook

Flash = Off-hook

Off = disabled

No AC Power Off Off Off

On = On-hook

Flash = Off-hook

Off = disabled

Firmware

Upgrade (normal

operation) (normal

operation) Off

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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 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

On =

Computer

connected

Off =

Computer not

connected

Flash =

Computer

activity

On =

Battery

good or

low

Off =

Battery

missing

Flash =

Battery

bad

No AC

Power

Battery

Installed

Flash Off Off Off Off

Off =

Battery

power

Flash =

Battery

bad

No AC

Power

Battery

Off Off Off Off Off Off

Firmware

Upgrade On Flash Flash On (normal

operation) (normal

operation)

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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 Telephony phase and

the cable modem phase. Both are outlined below.

Cable Modem Start Up Sequence

Power,

DS, US,

Online Link Telephone Battery* Description

Off Off Off Off Off No power to Cable Modem

Flash Flash Flash Flash Flash Power-on Self Test

See “Cable Modem Start Up Sequence” Below

On On Flash Off Off Retrieving telephone network

information

On On Off Flash Off Retrieving telephone line

information

On On Flash Flash Off Activating telephone service

Normal Operation

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

DS US Online Link Description

Flash Off Off Off Downstream search

On Flash Off Off Downstream found; upstream search

On On Flash Off Downstream and Upstream found;

retrieving setup information from cable

operator

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Using the Reset Buttons

Use the Router Reset button to reset the Ethernet and wireless connections with-

out affecting the cable or telephony connections. You 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

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 accidental resets. Use a pointed non-

metallic object to press this button.

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

4,3,2,1

WTM552A/B

TM Reset

WTM552G/H

Router Reset

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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 trouble-

shoot 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 Tele-

phony Modem and have received an IP address from the router. This information

can help you to troubleshoot connectivity problems or to see whether other 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.

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Viewing the Security Log

The security log keeps a list of system- and firewall-related events. You can use the

security log to troubleshoot connectivity problems and to view possible intrusion at-

tempts.

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.

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Backing Up and Restoring the Configuration

You can save 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 configuration.

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

tings.

The Save/Backup Settings window appears.

2Click the Save button.

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

puter.

3Copy 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 configuration.

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

Settings.

The Restore Previous Settings window appears.

2Click the Choose File button.

Your browser prompts you to find the saved configuration file.

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

The Telephony Modem restarts the router with the restored configuration.

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Resetting the Telephony Modem Router

The router can be reset in two ways: a “normal” reset that simply restarts the rout-

er (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 Te-

lephony 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, click the Utilities link in the navigation 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

To reset the router to factory defaults, you can press and hold the Router Reset but-

ton on the back of the Telephony Modem for about eight seconds. You may need to

do this if a misconfiguration has locked out all access. If you can access the router

and want to restart it remotely, you can use the Restore Factory Defaults page.

To 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 first.

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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 establish 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.

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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 Factory Defaults.

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

Check the indicator lights (see Using the Telephony Modem) — the WLAN

light should be on.

Does your connection utility discover your wireless LAN? If you turned off

“Broadcast SSID” (see Configuring the LAN Channel and Name) you need to

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 Factory 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 inter-

fering product, try using a different channel or setting Protected Mode (see

Configuring the LAN Channel and Name for both features).

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 trou-

ble 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 con-

nection speed.

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Other communications on the LAN, or interference with wireless connec-

tions, 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.

1Is 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.

2Is 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 you do not

have dial tone, contact your service provider.

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

3Is 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.

4Is the phone plugged directly into the Telephony Modem?

• Make sure the phone is plugged into the port on the back of the Te-

lephony 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.

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5Is the Telephony Modem plugged into a wall outlet?

• If so, unplug the RJ-11 connector at the back of the Telephony Mo-

dem 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.

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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) connec-

tions. 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. You 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 con-

figure 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.

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DOCSIS

Data Over Cable System Interface Specification. The interoperability stan-

dards used for data communications equipment on an HFC network.

EMTA Embedded Multimedia Terminal Adapter. An MTA device that is integrated

with a cable modem.

Ethernet

A standard method of connecting two or more computers into a Local Area

Network (LAN).

EuroDOCSIS

The European version of DOCSIS.

Event An informational message used for monitoring network status.

F-connector

The type of connector used on coax cable. There are two common types of

F-connector, slip-on and screw-on. Use coax with screw-on connectors for

connecting your Telephony Modem.

Firewall

A hardware or software device that prevents unauthorized access to a pri-

vate 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.

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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 iden-

tify your computer to other systems on the Internet.

ISDN Integrated Services Digital Network. A digital telephony standard that pro-

vides communication speeds about twice as fast as standard dialup.

LAN Local Area Network. A network that allows computers in a single location

(such as a building) to communicate with one another.

LED Light Emitting Diode. A semi-conductor diode that emits light when current

is passed through it.

MAC address

A number that uniquely identifies any device connected to a network. Your

cable company uses your Telephony 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 have a web

proxy that keeps copies of popular web pages; the proxy can send you

those pages instead of fetching them directly from the web site, resulting

in faster page loading and less network congestion.

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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 Ethernet cable. An

RJ-45 connector looks like a wide RJ-11 (telephone) connector.

Splitter

A small box with three cable connectors: one input and two outputs. You

may need a splitter if you have a TV already connected to the cable outlet

that you want to use for your Telephony 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 docu-

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

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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

All information contained in this document is subject to

change without notice. ARRIS reserves 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

Arris WTM552 TM552_User_Guide User Manual WTM552: Guide

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