Ensure that a Class 2 or 2.0 fax is being sent. Class 1 faxes are too time sensitive to be successfully redirected.Incorrect flow control settings is a common cause for faxing glitches. Typically the modem server is set to Software (Xon/Xoff) flow control and the modem device is set to Hardware (RTS/CTS) flow control (or vice versa).To correct this, either:- Change the flow control type on the modem server. The process for doing this will vary depending on the type of modem server.or- Change the flow control type on the modem device installed on the PC running our DialOut/EZ client.This is done from Windows Control Panel | Phone and Modem Options | Modems (tab) | Select your modem device | Properties | Advanced (tab) | Change Default Preferences | Change the Flow Control type.