To answer your question, look at DishTV themselves. They claim to provide 5.1 sound. Quite correctly, nowhere have they claimed to provide Dolby Digital.
That is what I am saying. We should not call it Dolby Audio. Simple 5.1 surround sound is all we can and should call it. Otherwise we are doing disservice to the genuine licensed partners of Dolby labs - TS, Airtel, etc.