With websites, it's possible to click a link to dial a number using the tel protocol (e.g. "tel:+19055555555"). These clickable links would prompt the browser to select a suitable app, and then automatically dial the number for you.
Having such a feature in Avaros would allow for quicker dialing of pt numbers, as well as reduce the possibility of misdialing a number (meaning the only major source of error would be in the initial entry in the master record).