I am having an issue with Centos 6 and an external USRobotics modem. We use the modem as part of a last resort SMS paging system. Across multiple Dell servers, different models, I can't not get the modem to respond to simple AT commands while using Minicom. At the same time if I connect the server to a console port on a switch I can successfully access the switches serial console. So I know the serial port itself is working. The modem still works fine if connected to a Centos 5 server. Any thoughts? Graham Johnston Network Planner Westman Communications Group 204.717.2829 johnstong at westmancom.com <mailto:johnstong at westmancom.com> P think green; don't print this email.