ModemGPH has its own website:

http://geocities.datacellar.net/modemgph

Download the latest version Modem Monitor Graph
for Dial-Up (version 4.1 March 2002) from there.

This free program plots in realtime all data sent and received using the Dial-Up Adapter and Modem. Read notes for more info - ModemGPH.txt

Unzip it ModemGPH.zip into any directory and run it.

Right-click to bringup the menu. Double-click to hide/unhide the title bar. You can also move the display using the left mouse button.

Tray Icon - LeftClick to bring the display to the forground, RightClick to display the Menu.

If you have problems in Windows95 try applying the Dial-Up Networking 1.3 update.
Download it from Microsoft.