noelmcrae
I'm not 100% positive of this, but I don't believe HughesNet Voice service offers an app or service like this. I was wrong, thankfully. :)
That would be a pretty handy, though, that's for sure.
With that said, to get an answer from a rep in order to be sure, you should re-post this question in the Tech Support section. Even if they don't have it, it might be an idea that they could pass along to the people who design the HughesNet Voice system so that they could make something like that available in the future. :)