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8. Troubleshooting


Overview


Problems

Internet Access

Problem 1:

Windows utility can't find the Level One ISDN Router.

Solution 1:

Check the following:

  • The Level One ISDN Router is properly installed, LAN connections are OK, and it is powered ON.
  • Ensure that your PC has the TCP/IP network protcol installed. In Windows, this is done by using Control Panel-Network. to check that you have a TCP/IP entry for your network card. If you don't, click the Add button, then choose Protocol - Microsoft - TCP/IP - OK to add this entry. You then need to restart your PC.
  • Ensure that your PC and the Level One ISDN Router are on the same network segment. (If you don't have a router, this must be the case.)

Problem 2:

When I enter a URL or IP address I get a time out error.

Solution 2:

A number of things could be causing this. Try the following troubleshooting steps.

  1. If this is first time you have used your browser, ensure that your workstations IP settings are correct, including IP address, default gateway and DNS.
  2. Ping the Level One ISDN Router. Use the "Run" command to enter the following command:
Ping xxx.xxx.xxx.xxx

Where xxx.xxx.xxx.xxx is the IP address assigned to the Level One ISDN Router.

  1. If the ping command fails, check that the Level One ISDN Router is connected and ON. If it is connected and on, there is a problem with your LAN.
  2. On the Quick Setup screen, check that Enable Internet Access is checked.
  3. Check the Status screen, and examine the Log. For details of the Log messages refer to Connection Log.
  4. Check your "Proxy Server" settings on your PCs.
    • The Level One ISDN Router is NOT a Proxy Server; PCs do not require "Proxy Server" settings to use it.
    • If you have Proxy Server on your local LAN, you should turn it Off, and disable the "Proxy Server" settings in your PC applications.
    • If your ISP has a Proxy Server, follow the instructions provided by the ISP.

Problem 3:

Some applications do not run properly when using the Level One ISDN Router.

Solution 3:

The Level One ISDN Router processes the data passing through it, so it is not transparent.

The Internet Application screen has 2 features designed to assist with running non-standard applications:

  • Special Applications
  • Exposed Computer

You should use the Special Applications feature if possible. If necessary, additional applications can be defined, using data provided by the service provider.
Remember that at any time, only one (1) user can use a particular Special Application.

If this cannot be made to work, use the Exposed Computer feature. This is a security risk, so should only be used if essential.

Dial-in

Problem 1:

My modem can't establish a connection to the Level One ISDN Router.

Solution 1:

You can NOT use a modem. You must use an ISDN TA, and establish an ISDN link.

Problem 2

I always get a busy tone when I try to dial-in.

Solution 2

Check the Usage setting on the ISDN tab. If set to "Always use 2 B channels", then dial-in is only possible when the Level One ISDN Router is idle.
If set to "Dynamically use 2 B Channels", then dial-in access will provided by dropping 1 B channel if necessary.

Problem 3:

When using Dial-in, I get an IP Address conflict involving the dial-in PC.

Solution 3:

This can happen if you are not using the DHCP Server feature of the Level One ISDN Router.

The Level One ISDN Router must allocate an IP Address to the dial-in PC, even if the DHCP Server is disabled. It allocates the IP Address shown in the Start IP Address field for the DHCP Server, on the LAN tab. If this causes an IP Address conflict, you can change this value as follows:

  1. On the LAN tab, enable the DHCP Server function.
  2. Select an unused IP Address from the address range used on your PC, and enter in the Start IP Address field.
  3. Disable the DHCP Server function.

  


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