Satellite phones require line of sight to the satellite to connect. They do not have enough transmit power to go through walls etc.
We suggest a Docking Station with an RJ11 port, this enables you to connect a cordless phone to the docking station and roam freely indoors.
This type of installation requires an antenna mounted at the highest point possible on the roof. We would need to know what length cable to provide as well, the proper size is needed to ensure signal propagation, this is a vital aspect of the install.