G729 - Info+My Problem

Hi to everyone…

I’ve buy a licence for this codec 2 weeks ago, but testing it I have got some problems…
Before explain it, I wanna tell you a question:

In case I have a G711 extension calling a G729 extension… I’m using 1 licence… In case I want to use DTMF tones or MOH Do I need another licence?

Best Regards