OS X Lion: Turning modem sounds on or off
If your computer makes peculiar sounds as it connects to the Internet, modem sounds are probably turned on.
- Choose Apple menu > System Preferences, and then click Network.
- Choose your modem from the network connection services list.
If your modem is not in the list, click Add (+) at the bottom of the list, choose Modem from the Interface pop-up menu, and give the modem service a name.
- Click Advanced, click Modem, and turn Sound on or off.
Modem sounds can help you pinpoint problems with a dial-up connection by letting you hear whether your modem is detecting a dial tone, whether it is dialing a number, and whether the remote server is answering the call.