Rhinos are not a pro-telephone species. The most obvious issue is that We do not have any phones. Perhaps if We did, We would become Rhinophonic. But that is pure supposition. Also unlikely.

Our communication systems are basic, but effective. Not only do We make sense most of the time, but We take advantage of body language when needed- which is all the time. Whoever heard of an encounter with a Rhino where the R attitude was confusing?

Nobody. Right.