You can use floating licenses with a dial-up network connection that supports a constant TCP/IP connection to the IBM Rational® License Server software. All clients must have a constant TCP/IP connection to the license server.
If the dial-up connection is lost while a client has checked out a floating license, the server will automatically reclaim the floating license. When the connection is lost, the client is unable to periodically refresh its license from the license server. As a result, you can use the Rational product for a limited period of time. This time period is dependent on the Rational product in use.