It depends on the size of your space and the cell phone coverage in the area for the provider for whom you are trying to increase the signal. Distributed Antenna Systems (DAS) are typically installed for larger facilities (more than 50,000 sq. ft) and require agreements to be in place with the cellular providers. Alternatively, a Cellular Signal Boosting System can be installed for smaller spaces (less than 50,000 sq. ft.) and do not require special agreements with the carriers.