The Ricoh cloud api server is now down. You can give OpenTok a go.
For the webRTC demo you are using, you would need to set up a separate Auth/BOSH server that is not the Ricoh cloud api server. You’d need to modify the code. I have not actually tried it with a separate Auth/BOSH server. The Ricoh demo was temporarily set up for a contest a year ago.
Note, I’m assuming that you were originally trying to use this code.