US Robotics COURIER - Page 156

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COURIER HIGH SPEED MODEMS
Software Commands-A TD, A TA
If your voice/ data switch is set for a function other than
voice/ data operations and you don't wish to change it, use
commands.
1. Call the other user to establish the bit rate, parity, word
length and number of Stop bits the other person's modem
accepts. Determine which modem will originate and which
will answer.
2. If you are to originate the connection, type the following
command:
3.
ATD <Enter>
NOTE: Be sure the modem is not set to X2, X4, X6 or X7, or
it will return the NO DIAL TONE result code and hang up.
The other party must then have the remote modem go off
hook in Answer mode. The following command is used to
do this:
ATA <Enter>
4. If the remote modem also has handset exclusion, leave both
phones off hook in case you wish to switch back again to
voice after
your data transfer. If the remote modem doesn't
have handset exclusion, switching back to voice may not be
successful. If you don't want to switch back to voice later,
hang up both phones as soon as the modems go off hook.
ALLOWABLE VOICE/DATA SWITCH FUNCTIONS
Use Register S32 to set the voice/ data switch for the function
you desire. The default is S32= 1 - pressing the switch forces
the modem off hook in Originate mode. Pressing the switch
when you power on the modem causes it to perform a power-on
self-test. See the table of allowable functions on the following
page.
Fax and Other Operations E-5