Apple twentieth anniversary mac Manual Do Serviço

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Adjusting the modem
You use the Express Modem control panel to turn the modem on and off, and specify certain settings.
Note:  Normally you use a modem in conjunction with communications software, which automatically
controls your modem’s settings. However, any settings you specify in the Express Modem control panel
take precedence over settings made by your communications software. You may want to check the
settings in the control panel if your communications software does not behave as intended.
Turning the modem on and off
If the Express Modem software is off, it is turned on automatically when an application needs it for an
outgoing communication. But whenever it is on, the modem uses about 600K of system memory, so
you may want to turn it off when you do not need it. Follow the instructions below.
Important  
If you turn the modem off, no communications program that uses the Express Modem
software will be able to receive incoming calls.
1
Choose Control Panels from the Apple (K) menu.
2
Open the Express Modem control panel.
3
Click the On or Off button to select it.
4
If an alert message appears, click OK to acknowledge the message and complete what you are doing.
Connecting 
Your Computer to
a Telephone Line
73