3Com 3C888 User Guide - Page 128

Symptom, Possible Cause, Solution

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128 CHAPTER 10: TROUBLESHOOTING AND MAINTENANCE Table 6 Symptoms, Causes, and Solutions Symptom Possible Cause Solution Clicking Submit in the LAN Modem's configuration pages does not take you to the next screen JavaScript may not be enabled in your Web browser. Enable JavaScript in your Web browser Refer to your browser's documentation for information. Sending SMTP mail is slow. Only one workstation to one server is supported at one time for SMTP mail. If more than one workstation starts an SMTP mail session to the same remote server at the same time, the mail transfer rate for each additional workstation will be slowed. Although multiple service You may not have configured the From the Dual 56K LAN Modem's home page, click providers are configured, all IP address and the subnet mask Service Providers and then select the private network calls are going to the same in the Private Network profile you already configured. Enter the IP address and service provider which is an ISP Parameters window. the subnet mask for the private network. Upon launching Web browser, Dial-Up Networking is set up for Windows 95's Connect To use with a serial port modem. window opens. To bypass the Connect To window: 1 From the Start menu, select Settings, Control Panel. 2 Double-click Internet. 3 Click the Connection tab. 4 Clear the checkbox labeled Connect to the Internet as needed, or check the Connect to the Internet using a local area network radio button. 5 Click OK. This allows all outgoing connections to run directly through your Dual 56K LAN Modem each time you launch your Web browser. During installation, Alert LED An internal failure. remains lit Notify your reseller or technical support that the Dual 56K LAN Modem has failed the self-test. During installation, Alert LED continues to flash Self-test failure, or LAN Modem is in firmware download mode Power-cycle the Dual 56K LAN Modem. If the Alert LED continues to flash, the LAN Modem has failed the self-test. Contact your network supplier. If the Alert LED is no longer flashing, then the LAN Modem is now operating correctly. Alert LED fast-flashes. (This may occur as a result of replacing a workstation on the LAN with a new computer.) The DHCP server has issued all of the available IP addresses and is unable to fulfill a request for a new IP address. From another computer attached to the LAN Modem: 1 Go to the LAN Modem's Main Configuration Page. 2 Click Workstations. 3 Click the Workstation Configuration tab. 4 Locate the name of the computer you removed, and click the Release button. 5 Reboot the newly-added workstation; it will now be assigned an IP address by the LAN Modem. Cannot place outgoing calls. Telephone line cables, power cable and/or phone cables may not be firmly connected. Check all cables and connectors to ensure that they are inserted securely. Telephone cables may not be inserted into the correct port. Ensure that the incoming analog telephone lines have been connected the ports labeled LINE 1 and LINE 2 on the LAN Modem's back panel. A data call may be in progress. Disconnect any data calls currently in progress. Make sure the Virtual Fax Modem is not active on the telephone line. (continued)

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128
C
HAPTER
10: T
ROUBLESHOOTING
AND
M
AINTENANCE
Clicking
Submit
in the LAN
Modem’s configuration pages
does not take you to the next
screen
JavaScript may not be enabled in
your Web browser.
Enable JavaScript in your Web browser
Refer to your browser’s documentation for
information
.
Sending SMTP mail is slow.
Only one workstation to one
server is supported at one time
for SMTP mail.
If more than one workstation starts an SMTP mail
session to the same remote server at the same time,
the mail transfer rate for each additional workstation
will be slowed.
Although multiple service
providers are configured, all
calls are going to the same
service provider which is an ISP
You may not have configured the
IP address and the subnet mask
in the Private Network
Parameters window.
From the Dual 56K LAN Modem’s home page, click
Service Providers
and then select the private network
profile you already configured. Enter the IP address and
the subnet mask for the private network.
Upon launching Web browser,
Windows 95’s Connect To
window opens.
Dial-Up Networking is set up for
use with a serial port modem.
To bypass the Connect To window:
1
From the Start menu, select
Settings, Control Panel.
2
Double-click
Internet
.
3
Click the
Connection
tab.
4
Clear the checkbox labeled
Connect to the Internet
as needed
, or check the
Connect to the Internet
using a local area network
radio button.
5
Click
OK.
This allows all outgoing connections to run directly
through your Dual 56K LAN Modem each time you
launch your Web browser.
During installation, Alert LED
remains lit
An internal failure.
Notify your reseller or technical support that the Dual
56K LAN Modem has failed the self-test.
During installation, Alert LED
continues to flash
Self-test failure, or LAN Modem is
in firmware download mode
Power-cycle the Dual 56K LAN Modem. If the Alert LED
continues to flash, the LAN Modem has failed the
self-test. Contact your network supplier. If the Alert
LED is no longer flashing, then the LAN Modem is now
operating correctly.
Alert LED fast-flashes. (This
may occur as a result of
replacing a workstation on the
LAN with a new computer.)
The DHCP server has issued all of
the available IP addresses and is
unable to fulfill a request for a
new IP address.
From another computer attached to the LAN Modem:
1
Go to the LAN Modem’s Main Configuration Page.
2
Click
Workstations
.
3
Click the
Workstation Configuration
tab.
4
Locate the name of the computer you removed, and
click the
Release
button.
5
Reboot the newly-added workstation; it will now be
assigned an IP address by the LAN Modem.
Cannot place outgoing calls.
Telephone line cables, power
cable and/or phone cables may
not be firmly connected.
Check all cables and connectors to ensure that they are
inserted securely.
Telephone cables may not be
inserted into the correct port.
Ensure that the incoming analog telephone lines have
been connected the ports labeled
LINE 1
and
LINE 2
on
the LAN Modem’s back panel.
A data call may be in progress.
Disconnect any data calls currently in progress.
Make sure the Virtual Fax Modem is not active on the
telephone line.
(continued)
Table 6
Symptoms, Causes, and Solutions
Symptom
Possible Cause
Solution