USRobotics V.34 - Manual (Page 49)

COURIER HIGH SPEED MODEMS
4-12 Data Mode Operations
When you power on the Courier, it loads the settings stored in
NVRAM if DIP switch 10 is OFF. Until you write your own
settings to NVRAM, the defaults stored there are the same as
the permanent ROM factory settings stored in position 1, &F1.
To view the &F1 settings, select option 5 of the I (inquiry)
command:
AT I5
Customizing NVRAM
&W To substitute a template other than &F1, write the desired
template to NVRAM, using the &W command.
AT &F2 &W
To modify the &F n configuration in NVRAM, type your
changes and then save them to NVRAM, as in the following
example. The original factory template remains intact.
AT M2 S10=40 &A2 &W
NOTE: When writing a different default configuration to
NVRAM, insert any additions
after the &Fn command but before
&W. Otherwise they will be overwritten by &F n.
After sending a configuration to NVRAM, you can change any
setting just for the current session, as in the following example.
The NVRAM configuration remains intact.
ATX6
But if you want the new setting to be a default, write it to
NVRAM at the same time, as in the following example. X7 is
substituted for the X
n value stored earlier. Any other setting
that was changed and can be saved to NVRAM will also be
saved.
AT X7 &W