Hello, friend!
According to the failure prompt, the Telnet failure may be caused by frequent logins to the ONT or other users logging in to the ONT at the same time.
Solution:
Log out of the ONT through Telnet and log in to the ONT again after a period of time.
Reset the ONT.
You can run the display lastwords all command to view information about the lastword area of a specified process. You can use the process ID to query information about the lastword area of a specified process.
If you can, provide the command result and device version.
Thanks!