Compaq ProLiant 1000 ProLiant Server Troubleshooting Guide - Page 86

Hardware Problems Table 2-19: Modem Problems continued Problem Possible Cause There is no response when you type AT commands. There may be a conflicting port address. The AT commands are not visible. The echo command may not be properly set. Data is displayed as garbled characters after the connection is established. The modems that are connecting are not compatible. The software may not be set for the correct terminal emulation. Possible Solution Reconfigure the COM port address for the modem. 1. Be sure that the communications software is set to the COM port to which the modem is connected. 2. Check IRQ settings in the software and on the modem. 3. Type the following at the command prompt to reset the modem to factory-default settings: AT&F 4. Be sure that you are in terminal mode and not MS-DOS mode. Refer to the HP website for a complete list of AT commands: www.hp.com Set the echo command to On, using the following AT command: ATE Be sure that both modems are operating with the same settings, including speed, data, parity, and stop bits. 1. Reconfigure the software correctly. 2. Power down the server and restart. 3. Run the communications software, checking settings and making corrections where needed. 4. Restart the server and retry. continued 2-44 HP Servers Troubleshooting Guide