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Reason why Dial Up gets Dropped Periodically   

Reason why Dial Up gets Dropped Periodically
For dial up connections that keep disconnecting periodically, or modem's that won't dial initially, but will when re-initialized, the cause is generally a COM port conflict at the DOS level...(does not necessarily show up in windows).
To resolve this problem, first find out what port the modem is on (generally it will be COM3), and disable the conflicting port in the BIOS. In the case of the modem being on COM3 IRQ4 disable COM1 in the BIOS, and for a modem on COM4 disable COM2 in the BIOS.


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