There are still a lot of cellular dead zones throughout New England, and different cell carriers have different coverage areas. If your workers have a mix of AT&T, T-Mobile and Verizon phones, and one of those carriers has a dead zone where you're working, the worker(s) who use that carrier can't communicate with the rest of the group.
MEC407
Moderator:
Pan Am Railways — Boston & Maine/Maine Central — Delaware & Hudson
Central Maine & Quebec/Montreal, Maine & Atlantic/Bangor & Aroostook
Providence & Worcester — New England — GE Locomotives