I'm not aware of any such facility under 2.7
To the best of my knowledge OS licensing on 2.7 follows the standard sun pattern of - if you bought the hardware from sun, aren't serving (in some nebulous sense) things out from the machine in question, and don't routinely have more than two people logging into the box then you're fine as a desktop license is included with all sun hardware, otherwise you need a server license. However I'm not aware of anything that enforces this (I don't have any 2.7 desktops around, but our 2.6 and 2.8 desktops are capable of supporting more than two users at once, and I'm not aware of any specific configuration we've done to out 2.7 servers to servify them from a license perspective).
I'm not sure if the free 2.8 binary licensing scheme has a 2.7 equivalent.
Callum