The Questions

I am lucky to live in a neighborhood with a rich diversity of inhabitants. As I was walking to the train the other morning, I heard a woman answer her phone in English, then immediately switch into a Chinese dialect. With the street traffic and the blowing wind, she had to raise her voice and it was clear that the person on the other end of the line had a hard time hearing her. What occured to me then is this: Is there a spoken language that lends itself more than the others to phone communication? At first, this seems like a silly question, but after some inspection it's pretty intriguing. It's true that the nuances of particular languages are mostly vocal, whereas others rely on physical signals (facial or whole-body) to illustrate the finer details of whatever is being spoken. Others have clear and distinct consonant sounds and crisp endings to the speech patterns. Some languages are simply more terse. Wouldn't it make sense that there is an optimal language to use when speaking on the phone?