Migration from cucm 8.6 to 11.5 is in progress.
We are testing switching from old to new servers with TFTP change for phone migration.
During the test, the phone has existing ITL information.
We are going to integrate ITL through bulk certificate management.
The SFTP connection was good on the old server.
However, the new server will not be able to connect with the following message.
"Unable to access SFTP server or SFTP server too slow to respond. Please make sure the login credentials are correct."
What is the cause of this?
Please confirm.
