D-Link DIM-128 User Manual - Page 49

ISDN AT COMMANDS Besides using configuration utility as described in the previous section, you can alternatively use ISDN AT command to configure and use the Intelligent ISDN TA PC Card. More specifically, AT commands are usually issued to the ISDN TA PC Card to control the TA's operation and configuration. AT commands can only be entered while the TA is in command mode. The format for entering AT commands is: ATXn ↵ where X is the AT command, and n is the specific value for that command. ↵ means pressing the ENTER button. Any command issued is acknowledged with a response in either text or numeric values. If the commands and command-values are correct, the OK message will appear; otherwise ERROR message will prompt. This chapter describes how to use the AT commands for the users who need special parameters in order to meet their applications. Refer to the appendix for the detailed ISDN AT command definition. Using ISDN AT Commands As mentioned above, you can use ISDN TA PC card through AT besides except through communication software carefully every time, because they can cause your software to loose its ability to control the modem. When you do find any AT command causes ISDN TA maul-function, turn the computer off and then on. That will reset most of the AT command settings to the factory defaults. In order to use an AT command, you need to have done the following: 1. Run your communication software. 2. Configure the software for the appropriate COM port and IRQ setting if necessary. 3. Enter terminal mode (aka command mode, local mode, or directmode.). This is usually the mode that communications software starts up. Then, type the AT command for you needs, then press Enter key. For example, AT!C0=0 Set the ISDN TA to connect to AT&T 5ESS switch AT!Z=9 Select async to sync PPP Conversion AT&N0=0 Select Single-Link PPP mode Mostly the AT commands can also be entered in the same command line. For example, AT!C0=0!Z=9&N0=0 - 48 -