Cisco 79xx distinctive rings?

I’ll be quick about this one…

7941 and 7965, I want them to do double ring on external incoming calls, standard ringtone on internal, how do I do that? Tried the Alert Info thing to no avail.

The reason this was so short is because everyone seems to dog on Cisco a lot, so… here we are…

EDIT: I’ll also want to know how to change the cadence of the ringing on the phones as well, and handle context of which ringtone the phones should play and so forth