redirect sound (microphone) via ssh, how to telephone via ssh?

**How can I redirect the microphone of one computer to listen to it on another computer via ssh? Which is the right device or which is the right command line?** Some years ago it was easy and fun to redirect sound from a remote microphone to a local computer or vice versa – it was an easy telephone. There are [some](http://www.commandlinefu.com/commands/view/350/output-your-microphone-to-a-remote-computers-speaker) [instructions](http://ubuntuforums.org/showthread.php?t=1328338) for it, but none of them seem to work on newer computers/linux distros. I don’t even have a /dev/audio on my computer (Fedora 17). I think that it may have something to do with pulse audio. Or don’t I need pulse audio for this simple telephone? Which is the right device? I can see all my sound devices when I start alsamixer and press the F6 key. But I don’t know which are the devices in my /dev tree.