I successfully able to connect to Oracle(10g) at locally and as well on remote server through SQL developer.
I have another remote Oracle Server version 184.108.40.206.0, when iam trying to connect i receiving error "Unsupported Oracle database version".
Please help to find the solution to the problem to connect to remote Oracle Server version 220.127.116.11.0.
You don't say what sqldeveloper version you are using but I assume recent one which uses the 11g JDBC drivers. Connection to 8.1.6 is not supported wit that JDBC drivers
Your only chance is to download an older version of sqldeveloper, 1.5 or perhaps 2.1.
I realise it probably isn't in your control, but 8.1.6 has been out of support for many years and you really ought to upgrade.,