Thx a lot for the support, i can telnet to the IBM mainframe; i went through links and ended up with the following code:

use IO::Socket;

my $sock = IO::Socket::INET->new(
   Proto    => 'TCP',
   PeerAddr => '161.196.25.2',
   PeerPort => '23',
)
   or die "Unable to create socket: $!\n";

#while ( <$sock> ) { print }

@line=<$sock>;
print @line;
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Unfortunately, as i run this pl, the machine just "hang up", till CTRL+C is pressed.

Any examples using Net::elnet, Expect ?

Regards.