I've created an dll based on tapi api configuration and pardon my question in advance. I use this Dll in asp page and of course everything it's running okay in my computer, but when I use it in the user's computer It doesn't hang out or close the line when It's supposed. I have in my computer win2k and use visual basic 6.0 sp5, the user's computer have winxp and because I read it msdn I think the TAPI's dll has a new version. Any Ideas. Thank You