3Com Dual 56K manual Click Workstations Click the Workstation Configuration tab

128CHAPTER 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

Sending SMTP mail is slow.

JavaScript may not be enabled in	Enable JavaScript in your Web browser
your Web browser.	Refer to your browser’s documentation for
	information.
Only one workstation to one	If more than one workstation starts an SMTP mail
server is supported at one time	session to the same remote server at the same time,
for SMTP mail.	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

Upon launching Web browser, Windows 95’s Connect To window opens.

During installation, Alert LED remains lit

You may not have configured the IP address and the subnet mask in the Private Network Parameters window.

Dial-Up Networking is set up for use with a serial port modem.

An internal failure.

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.

To bypass the Connect To window:

1From the Start menu, select Settings, Control Panel.

2Double-click Internet.

3Click the Connection tab.

4Clear the checkbox labeled Connect to the Internet as needed, or check the Connect to the Internet using a local area network radio button.

5Click OK.

This allows all outgoing connections to run directly through your Dual 56K LAN Modem each time you launch your Web browser.

Notify your reseller or technical support that the Dual 56K LAN Modem has failed the self-test.

During installation, Alert LED	Self-test failure, or LAN Modem is
continues to flash	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.)

Cannot place outgoing calls.

The DHCP server has issued all of the available IP addresses and is unable to fulfill a request for a new IP address.

Telephone line cables, power cable and/or phone cables may not be firmly connected.

From another computer attached to the LAN Modem:

1Go to the LAN Modem’s Main Configuration Page.

2Click Workstations.

3Click the Workstation Configuration tab.

4Locate the name of the computer you removed, and click the Release button.

5Reboot the newly-added workstation; it will now be assigned an IP address by the LAN Modem.

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.

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