In data mode, You can't use any AT commands except the +++ command, which has
+++ at the head.
If you stop communication and disconnect the phone, the Fax modem will run in command mode again.
Using Command Mode during Communications
Sometimes, you have to use AT command while you're communicating with others via modem. In this case, you can use +++ command for AT command without hanging up your telephone. Pressing '+' three times makes fax modem change to command mode. Of course, the telephone is not disconnected. (Don't press the Enter key after
input +++)
Connection may be lost depending on the server.
If you want return to Data mode from command mode, you only have to input ATO and press the Enter key to start the communications again.
The mode can not be transferred from the command mode to data mode depending on the server.
Using AT Commands
AT commands can be used in the following way. There's no difference between capital letters and small letters, and all commands should include 'AT' as a prefix except ones, which include 'A/' instead.
Also, Carriage Return saved in the S3 register should be entered in order to sign the end of the command.
| AT commandPress Enter key |
Example: | ATDT |
Display the result value
After entering AT commands, the result value is displayed on the screen.
The result value can be displayed during communication. Generally, the result will be OK. According to the ATV command, the result can be displayed as Words or numeral letters. (ATV0: Display as numeral letters, ATV1: Display as English words)
82 Users Manual
