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Installing NetModem Client on Multi-user Operating Systems

This procedure applies to NetModem Client only when used with Microsoft Terminal Services or the Citrix MetaFrame operating system. 

A NetModem Client virtual COM port, like any physical COM port, can only be used by one application at any given time. When using NetModem Client on a multiuser operating system, you should use the following steps to ensure that each user uses seperate NetModem Client COM ports and modem device drivers:

  1. Run the NetModem Client setup program as described in the Users Guide.

  2. When the Select Ports Window appears, first set up a single COM port, and configure the IP Address of the NetModem Server and any other desired settings. When you click the "Save" button, these settings will be remembered for future COM ports you add.

  3. After you click "Save", NetModem Client will prompt you to add a modem driver. For now, click "Continue" to skip this step.

  4. Click the "Select Ports" button, and choose the maximum number of NetModem Client virtual COM ports that your users will need. For example if you have 50 users and each user uses a single modem, then select a total of 50 virtual COM ports. When you click OK, you will see that these have all been configured with the same IP address and settings that the first COM port was given.

  5. Click the "Save" button, and again it will prompt you to add a modem driver. This time, click the "Add Modem Driver" button, and follow the steps shown to add modems using the Window Add Hardware Wizard. When you are instructed to assign a modem driver to the ports, select all the NetModem Client virtual COM ports.  This will allow all the selected COM ports to be assigned to the same modem driver at one time.

  6. In the NetModem Client Configuration, click the "Advanced" button, and disable the checkbox which says "Show Message if Port is not available". These messages should be disabled because otherwise they will be seen by every thin-client that is connected to the terminal server.

  7. If needed, install modem drivers on each Virtual COM port.

  8. Instruct each user to only use the NetModem Client COM ports assigned to them, or the corrosponding modem device generated by the modem driver. NetModem Server will automatically connect each user to the next available physical modem on the modem server.  If all the modems are currently in use, the user will see an error message from their PC application which is attempting to access the COM port.


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