Hello, I am attempting to get the asttapi driver working on Windows XP Professional, and am running into some strange problems. I've combed the Web and the Wiki for information on debugging the application to see if I can solve my issue, but nothing is helping me. I have tried the driver on two different Windows XP Pro workstations with the exact same results. Here is where I grabbed the code: http://sourceforge.net/projects/asttapi/ I did the installation and verified that I could connect to the manager interface as the user that I want to use. However, whenever I try to make a call with Outlook, I am give the following error message: "The selected line or address is in use by another program or device. Your call could not be placed at this time. Try your call again later." In true microsoft tradition, this is the extent of the error message, and I have found nothing related to it in any log files. I did find the following on Microsoft's Website: http://support.microsoft.com/default.aspx?scid=kb;en-us;q194253 This offers no help. Anyone have any suggestions? Anyone using the driver under Windows XP? -- Vice President of N2Net, a New Age Consulting Service, Inc. Company http://www.n2net.net Where everything clicks into place! KP-216-121-ST