RAS Information

I was asked by one of my fellow workers “How many RAS sessions does Windows 2000 Professional support concurrently?” He wants to set up a machine to handle sessions and is looking at Windows 2000. I do not know and up till then, never considered it because we are slowly migrating to Win2000. However, I have not been able to find any exact information concerning this. Does anyone know? It’s driving me insane not knowing.