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To test your modem configuration, connect to another modem using a terminal emulation package (for example, Windows Terminal for Windows systems). For more information, see your modem documentation.
Certain problems are reported by FirstClass. In this case, they have a FirstClass error number. Make of note of this number in case you need to contact your administrator.
No response from the server's modem
Possible cause |
Additional information |
the modem at the other end isn't connected to a FirstClass system |
Make sure you are specifying the correct modem phone number, with any necessary dialing prefixes, in your service setup information. |
your modem is incompatible with the server's modem |
This is especially common for modems that offer high speeds or advanced protocols. Try lowering the baud rate in your connection information. |
a poor phone connection is causing line noise |
This is common for long distance calls. Try the call again. |
you specified the wrong modem type for your modem when you configured connection information |
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the value of the connect timeout register (S7) is too short |
Use a text editor to open the modem (.mdm) file you are using and change the MLTO value. This value is in 60ths of a second. Try 90 seconds (MLTO=5400). Your value here will map to the S7 register. For more information on the S7 register, see your modem documentation. |
Host does not appear to be a FirstClass server
Possible cause |
Additional information |
the two modems negotiated, but the system at the other end didn't respond to the FirstClass login request |
Make sure you are specifying the correct modem phone number, with any necessary dialing prefixes, in your server setup information. |
Communication failed while connected
When a modem connection fails while a call is in progress, the cause can be difficult to identify.
Possible cause |
Additional information |
a poor phone connection is causing line noise |
This is common for long distance calls. Try the call again. |
another application, such as a screen saver, graphics application, or file compression utility, running on your computer is using up available system resources |
Quit other applications and try again. |
the network packets may be interfering with the serial port, if you have a high-speed modem and are also connected to a network |
Disable the network connection and try again. |
the baud rate that was specified when you configured connection information is too high |
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