Multi-Tech Systems ISIHP-4U Wn Store Configuration, Fn Load Default Configuration, Zn Reset Modem

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.

MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 81