I have open ticket today ,,,but after that i noticed some issues with the security team and their firewalls, they did not open the ssh ports to the AIX test servers (same POC scope and same request, i will investigate with them and return back.
but in general ,, the AS400 depend on Mindterm telnet app (not simple telnet communication ) ..
anyway after that i it will be clear if it communication or need special script to login.
thanks Joseph_Lutz