US Robotics COURIER - CHAPTER 5. INTERNAL CONTROLS; Writing Defaults to NVRAM (&W)

-
-
COURIER HIGH SPEED MODEMS
CHAPTER
5. INTERNAL CONTROLS
The commands explained in this chapter are of two types. The
first
group concerns default configurations, for example, writing
your own power-on defaults to nonvolatile random access
memory (NVRAM). The remaining commands are used to select
the modem's local operating characteristics, for a current session
or to include in your default configuration. They include result
code, echoing, and other options.
NOTE: When you change a default setting during a session, the
modern retains that setting until you do one of the following.
•
Change the setting.
•
•
Issue the ATZ command to reset the modern to its soft-
ware defaults. If DIP switch 10 is OFF, the modern
resets to the defaults stored in nonvolatile memory
(NVRAM). If DIP switch 10 is DOWN, the modem
resets to the factory settings stored in read only memory
(ROM).
Issue
the AT &F command to load the modem's factory
settings.
•
Turn the modem off and power it on again. At power-
on, the modem loads either the nonvolatile memory
defaults (DIP switch 10 OFF) or the factory settings (DIP
switch 10 DOWN).
SETTING/US/NG DEFAULTS
The modem's read only memory (ROM) permanently stores the
modem's factory settings. The inclusion of nonvolatile random
access memory (NVRAM) allows you to define your own con-
figuration
and write the settings to NVRAM as your power-on
defaults.
WRITING DEFAULTS TO NVRAM (& W)
When you power on the Courier, it loads the settings stored in
NVRAM if DIP switch 10 is OFF (factory setting). Until you
write your own settings to NVRAM, the defaults stored there are
the same as the permanent ROM factory settings.
Internal Controls 5-1