In order to telnet to a remote computer, you need: the telnet software on
your local system, and the address of the remote computer.
Moving through a catalog will require using the commands shown
at the bottom of the window; even though you are using a Windows (i.e.
point-and-click-with-the-mouse interface) telnet application to connect to
a remote system, once connected you have to use the commands required by
the remote system. So in order to see the rest of the list of branches where
a book might be available, you can't scroll down to see more of the
document, you have to hit the space bar, as instructed by the commands listed
at the bottom, to move to the next screen.