Multi-Tech Systems ISIHP-2U - Manual (Page 81)

MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 81
Modem AT Commands & S-Registers
&Wn Store Configuration
n = 0
Default: &W0
The &W command stores current AT commands and S-register values in
nonvolatile memory, so you won’t lose your custom settings when you turn
off the modem or reset it.
&W0 (or &W) stores all current AT command and S-register values in
nonvolatile random access memory (NVRAM) and configures the modem
so it reads your custom settings in NVRAM when the modem is turned on
or when it is reset with the Z command. The &F reset command continues
to read the factory default settings in ROM.
&Fn Load Default Configuration
n = 0
Default: &F0
ISIHP-2S/2U modems store factory default AT command settings and S-
register values in read-only memory (ROM); they store your custom AT
command and S-register values in nonvolatile random access memory
(NVRAM).
The &F0 (or &F) command resets modem to the factory default values
stored in ROM.
Zn Reset Modem
n = 0 or 1
Default: none
The Z command resets the modem to the configuration last saved by the
&W command. The default values come from the customized configuration
in NVRAM.
Z1 is the same as Z0, and functions identically.
&Yn Select Stored Configuration for Hard Reset
n = 0
Default: 0
This command is included for compatibility with applications that issue the
&Y0 command. Modem functions are not changed.