Georgia Telnet can restrict the number of users that connect to Telnet or SSH.
I am lazy so I tend to generate a list based off our user logon scripts folders, however I do of course take a backup and test it afterwards.

echo Change to the drive where your Georgia logon scripts are located
d:
echo Change to the folder to where your Georgia logon scripts are located
cd D:\Datalinx\GS_UTS\scripts
echo Get the dir command to write out a simple list of directories into a file called dir.txt
dir /B /A:D >dir.txt
echo add a 1 to end of each row and copy the list into the file GS_L_User.txt located normally a directory above the user script folders.
echo It takes place straight away
 

Additional information:
Georgia Telnet Manual and Logon Features