I've got a friend that owns a business in an area that is never going to be covered by any carrier as far as I can see (not even RBI). They have zero cell coverage, but they do have DSL, and it's surprisingly OK. They're a few kilometres from a main highway, surrounded by hills.
My question is about the number of devices for Sure Signal. Is it four devices simultaneously on calls, or four devices connected to the femtocell total at one time? They will have at least 20 potential users. If it's only four connected total at one time, are there any other viable options?
Thanks in advance for your answers.