Farallon Communications 412 Manual Do Utilizador

To ensure that your ISDN modem is operating correctly, run your 
communications software and make sure the ISDN modem is in 
command mode. The modem does not need to be connected to a 
phone line for these tests.

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Type AT and press the Return key. If you get the OK response, 
you are in command mode and talking to your modem.

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Type AT\S and press the Return key. This command shows the 
modem's active profile of command settings.

You can do a “soft reset” of the modem by typing in ATZ and 
pressing the Return key. This recalls the stored parameters and 
resets all modem registers. A “modem register” is a variable setting 
which is entered into the modem's memor y and defines a specific 
modem setting. A “hard reset” is done by disconnecting the ISDN 
modem, waiting a few seconds, and connecting it again.

To place a call, use the dial command (ATD). This command is 
followed by a “dial string” which includes the telephone number. The 
dial string can hold a maximum of 40 characters (not including the 
two AT characters and spaces). Valid dial string characters are 0–9 
and dial modifiers. The modem ignores invalid characters. A dial 
string may also include modem commands, which must be added 
after the AT and before the D command.