Multi Tech Equipment ISIHI-2S manual AT Commands that Affect S-Registers

Modem

Chapter 4—MODEM AT Commands, S-Registers, Result Codes

AT Commands that Affect S-Registers

For maximum throughput, the ISIHI-2S’s default configuration is for originating a call to another 33,600 bps modem that supports error correction, data compression, and flow control. If the receiving modem is not compatible, the ISIHI-2S can match any ITU-T or Bell standard modem (but not proprietary protocols).

If you require a different configuration for your application, for example, if you want to use an ISIHI-2S modem strictly as an auto answering device or for service that does not support error correction, you can change the command parameters and S-register values in active memory and save the new values with the &W command.

The &W0 (or &W) command stores all current AT command and S-register values into nonvolatile random access memory (NVRAM) and configures the modem so that 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 will continue to read the factory default settings in read-only memory [ROM].) For convenience, you can include the &W command in the same command string that sets the new values in active memory as in the following example: AT\N2&C1S0=10&W0<cr>

88 MultiModemISI Hybrid Series, ISIHI-2S