Current connected serial direction :
Num           Source                  Destination
{%
    for i, connect in ipairs(connect_table) do
        if connect.CurrentConnectStatus == 1 and connect.Availability ~= 2 then
            local line = string.format("%-10d    %-20s    %-20s", connect.Id, connect.Source, connect.Destination)
            echo(line, '\n')
        end
    end
    echo('\b')
%}