User manual
Table Of Contents
- Table of Contents
- About This Guide
- Introduction
- ISDN LAN Modem Functionality Description
- Hardware Description and Installation
- Setting Up TCP/IP for Windows and Macintosh
- Configuring the ISDN LAN Modem
- Advanced Configuration
- Before you Begin
- Setting Up Additional Service Providers
- Editing Service Provider Profiles
- Restricting Workstations from Accessing Service Provider(s)
- Configuring Your LAN Parameters
- Changing Data Call Parameters
- Changing Voice Call Routing
- Reserving DHCP Addresses
- Selective Password Protection
- Changing Your Password
- Setting Up Your ISDN Line Manually
- Locking and Unlocking the Configuration
- Configuring the ISDN LAN Modem from a Remote Location
- Supplementary Voice Call Services
- Placing, Receiving and Disconnecting Calls
- Troubleshooting and Maintenance
- Networking Primer
- What is a network?
- What is a LAN?
- What is a WAN?
- How does a LAN connect to a WAN?
- What is a LAN modem?
- What is ISDN?
- How do different devices communicate with each other?
- What is TCP/IP?
- What is an IP Address?
- What is a Subnet Mask?
- Dynamic and Static IP Addresses
- What is DHCP?
- What is DNS?
- What is NAT?
- What are numbered and unnumbered links?
- How is overall throughput determined?
- What is a network?
- Using the Custom Web Browser
- ISDN LAN Modem Factory Defaults
- ISDN LAN Modem Specifications
- Ordering ISDN Service
- If You Place Your ISDN Order Through 3Com
- If You Place Your ISDN Order Through the Telephone Company
- Supplementary Voice Features Included with U, EZ-ISDN-1, V and EZ-ISDN 1A
- Limitations of ISDN Ordering Codes U, EZ-ISDN 1, V and EZ-ISDN 1A
- What If I Already Have ISDN Service?
- Table of ISDN Ordering Code Capabilities
- Glossary
- Index
- 3Com Corporation Limited Warranty
100 C
HAPTER
9: T
ROUBLESHOOTING
AND
M
AINTENANCE
Finding More
Information
For more information about the ISDN LAN Modem, such as frequently asked
questions and specific technical notes go to the following URL:
http://www.remoteaccess.3com.com/support/docs/lanmodem/welcome.html
and then bookmark this site for quick and easy access. If you are using the ISDN
LAN Modem custom browser, click
Updates
from the menu bar.
Contacting Technical
Support
For technical support, refer to the technical support card that was included with
your ISDN LAN Modem for the telephone number for your location.
Downloading
Firmware to Your
ISDN LAN Modem
Your ISDN LAN Modem has been designed to be user-upgradable. Firmware
upgrades and instructions will be available at
http://www.remoteaccess.3com.com/support/docs/lanmodem/welcome.html
Resetting the ISDN
LAN Modem
There are two types of resets you can perform, a normal reset and a factory reset.
■
A normal reset resets the ISDN LAN Modem without affecting any of the
configuration that has already been done. Any active calls, however, will be
terminated.
A normal reset can also be performed using the reset button located on the back
of the ISDN LAN Modem.
■
A factory reset restores the ISDN LAN Modem configuration to the factory
default settings listed in Appendix C. All previously configured settings are
cleared and current calls are terminated.
To reset the ISDN LAN Modem, do the following.
1
From the ISDN LAN Modem’s home page, select
Maintenance
.
2
Select the type of reset you would like to perform, normal or factory.
Resetting the ISDN
Modem Using a
Telephone
If your computer cannot communicate with the ISDN LAN Modem and therefore
you cannot get to the ISDN LAN Modem’s home page, you can restore the ISDN
LAN Modem to the factory defaults using a telephone connected to one of the
phone ports.
Once you’ve connected an analog telephone to one of the ISDN LAN Modem’s
phone ports, do the following.
1
Disconnect the ISDN cable from the ISDN LAN Modem.
2
Lift the handset of the telephone.
You may hear a fast busy tone.
3
Press the following keys: **3266#
The ISDN LAN Modem reinitializes itself. Wait at least 10 seconds to ensure
initialization is complete and then go on to step 4.