Need Helo With ssh

My Application tries to ssh to  a system, which is alive and i can ping to it, but my ssh command hangs and doesn't respond for hours.
I tried the -o ConnectTimeout  option, but this works only for machines that are not around. For example
ssh -o connectTimeout=5 root@200.200.200.200 times out in 5 seconds.

My case is a little different, I know a machine exists but there is some problem with that and its not answering my ssh request. Any help would be greatly appreciated.