Apple iMac (Slot Loading) Especificações descarregar pdf (Página 46)

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101

Troubleshooting Testing the Modem - 18

A good test to see if the phone line is working is to type “ATDT”,

which will open the phone line. If the modem reports NO DIAL-

TONE, there isn't a valid analog line connected. If the phone line

works, you will hear a dial tone until you press the Return key, at

which time the modem will report NO CARRIER. A No Carrier

message means the phone line was successfully opened.

Other things that can be done here are:

• Call another modem to verify connections.

• Call a working phone number to see if you can successful

connect to an outside line.

• Use the ATI1-17 commands to check firmware versions and

modem features.

• Use ATZ to reset the modem back to its original configuration.

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