Data Commands and Registers (FAX)
Commands
The &F command sets all data and FAX parameters to their factory default
values. The default FAX Class 2.0 parameter values are identified in [2].
The only parameter for Class 1 is +FCLASS; its default value is 0.
The Zn commands load the appropriate set of data parameters and does not
change any FAX parameters.
The &Wn commands store data parameters. FAX parameters are not stored; most
FAX programs send FAX parameters to a modem before using the modem for a
call.
All data commands (the commands that do not begin with +F) are valid when
the modem is in either data or FAX mode. However, the following data configuration
commands affect only the data mode.
Bn Cn Nn Yn &Bn &Gn
&Mn &On &Qn &Rn &Un &Xn
When the modem is in the FAX mode (+FCLASS=1 or 2.0), the &Cn
command invokes the RLSD behavior associated with the &Q5
command.
The Mn - Select Speaker Function Option command
determines when the speaker is turned on and off. When in the FAX mode,
on until carrier shall mean on until the +FCON response is sent to the DTE
for a Class 2.0 modem, or until the initial CONNECT result code for Class
1. The speaker shall actually be turned off within 5 ms before or after
the response is sent.
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