I just upgrade my operating system to XP Pro and cannot seem to get any external modems to functions properly. I have tried 2 different external modems and one internal modem. The fax sending to me displays "poor line condition" on its confirmation page. My receiving fax(es) indicates that it are answering, but the handshake never completes. It doesn't even try to send faxes from the computer. I'm at my wits end with this one. We also use Cisco VOIP, but we were using all of these modems prior to the XP upgrade and all were fine. Both external modems installed drivers on XP with no problems. I'm using the Windows Fax Service program for faxing. Any ideas/comments/suggestions would be greatly appreciated!