A-4 Netopia ISDN Modem User’s Guide
on the screen after command execution. You may select the form of result codes sent by the ISDN modem (ATV0 or ATV1), or you may issue the ATQ1 command and disable the result codes. If the ISDN modem’s result code settings are turned off, you will not see the result codes on your computer screen.
Command parameters
Many of the AT commands require you to specify a value along with the AT command in order to clarify the command function. For example, ATV is the command for selecting the result code format. When issuing a command with a parameter, type the value after the AT command, for example ATV0 (this command enables short form result codes).
S registers
The S registers control how the modem responds to your phone line and computer. Generally, it is not necessary to alter register values when you are using communications software. The software controls the registers as you issue commands. However, direct access to the S registers allows you to customize and control your modem for every application.
