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User Guide
itself, may use the same COM port, memory address, or interrupt request (IRQ)
as your communications port. Be sure to disable any unused ports.
To look for address conflicts or IRQ conflicts when using Windows 3.1x, begin
in Program Manager. Select File, Run. Type MSD, and press ENTER. Then select
Mouse, COM Ports, and IRQ Status and note the addresses and IRQs that are in use.
If you find an IRQ conflict, note which IRQs are not being used, then change one of
the conflicting devices to use one of the unused IRQs. If you find an address conflict,
change the address of one of the conflicting devices.
To change a port address or IRQ in Windows 3.1x, double-click the Control Panel
icon, then the Ports icon. Click on the port you want to change, click Settings,
click Advanced, and select the new port address and/or interrupt. If you wish
to use COM3 or COM4, note that COM3 shares an IRQ with COM1, as does COM4
with COM2, so you should change their IRQs to unused ones, if possible.
If you use Windows 95, right-click on My Computer, select Properties from the
menu, click on the Device Manager tab, double-click on Ports, then double-click
on the Communications Port your modem is connected to. In the ports Properties
sheet, click on the Resources tab to see the ports Input/Output range and
Interrupt Request. If another device is using the same address range or IRQ,
it will appear in the Conflicting Device List. Uncheck Use Automatic Settings to
change the ports settings so they do not conflict with the other device, or select
the port the conflicting device is on and change it instead. If you need to open
your computer to change switches or jumpers on the conflicting device; refer to
the devices documentation.
4 The serial port may be defective. If you have another serial port, install the
modem on it, change the COM port setting in your software, and try again.
4 The modem may be defective. If you have another Multi-Tech modem, try swapping
modems. If the problem goes away, the first modem is possibly defective. Call Tech
Support for assistance (see Chapter 5).
The Modem Dials But Cannot Make a Connection
The modem may fail to make a connection for one of several reasons:
modem is not configured properly.
modem is disconnected from the telephone line.
a wrong dial tone.
a busy signal.
a wrong number.
no modem at the other end.
a faulty modem, computer, or software at the other end.
incompatibility between modems.
You can narrow the list of possibilities by using extended result codes. To enable