633 The modem is already in use or is not configured for dialing out

633 If this is a dial-up connection, the COM port that the network connection attempted to use is already in use by another active network connection or another process (for example, a phone line monitoring program, such as a fax program). Quit the application that is blocking the use of the COM port.If this is a virtual private network (VPN) connection, the VPN device that the network connection attempted to use cannot be opened. If the problem persists, see your system administrator.