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Touchstone® WTM552 Telephony Modem User’s Guide
71
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 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.
Page 72 / 79
Touchstone® WTM552 Telephony Modem User’s Guide
72
Getting
Battery
Wireless
Ethernet
Safety
Started
Installation
Installation
Configuration
Configuration
Usage
Troubleshooting
Glossary
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.
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 you 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 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.
Page 73 / 79
Touchstone® WTM552 Telephony Modem User’s Guide
73
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 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.
Page 74 / 79
Touchstone® WTM552 Telephony Modem User’s Guide
74
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) 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.
Page 75 / 79
Touchstone® WTM552 Telephony Modem User’s Guide
75
Getting
Battery
Wireless
Ethernet
Safety
Started
Installation
Installation
Configuration
Configuration
Usage
Troubleshooting
Glossary
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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