My friend has a linux server which I have a ssh login to.
The machine has no X.
What is the best way to communicate between my ssh login and his root tty login?
I tried wall, but I'm looking for a better alternative
Okey, let's see if I understand you correctly.
You want to log in to your friends server. You want to do it over the console (tty)
Just use ssh [username]@[servername goes here]
and you are in business. If you omit username and @, then ssh will try to log you on with the user you are currently local logged in.
I hope I understood your question, other just ask.