Reverse Telnet Madness

Hello, I am having a problem with running INformix programs on a terminal that is connected to our Sparc 10 Model 20 -- Solaris 2.3, through a Chase Research terminal server. It is connected via reverse telnet. I have enabled the port using pmadm, sacadm, etc. The user can login without any problems, do vi, mail, etc without ANY problems. However, when it comes to informix, it goofs up. For example, in a menu, the user normally only has to press the first letter, i.e. e for exit. But in this scenario, the user has to push e and hit return for it to take the action. It also echos everything back. I am using a wyse50 emulation and I've compared the stty settings between this terminal and my other terminals with the same emulation. Any HELP would be gratefully accepted. Pete