Dennis Oland murder trial: Cellular expert delivers blow to defence
![Dennis Oland murder trial: Cellular expert delivers blow to defence](https://shawglobalnews.files.wordpress.com/2019/02/cpt113528389-4.jpg?quality=70&strip=all&w=720&h=480&crop=1)
Joseph Sadoun, a consulting engineer for cellular companies, told Dennis Oland's trial on Tuesday the general rule is that cell phones communicate with towers that have the strongest signals, and those typically are the closest.