If you need reliable signal in your building for Verizon, AT&T, T-Mobile and/or Sprint, and if WiFi calling isn’t cutting it, consider the following:
1- Most Off-Air DAS don’t work reliably in highly congested urban areas.
2- Non-residential DAS system have to be approved by carriers
3- There is no way to guarantee or monitor performance of an in-building solution without the collaboration of the carriers
4- Technology is moving away from Off-Air DAS for reasons of both cost and performance
5- Off-Air System does not provide E911 location of the building.
Legal considerations: FCC Report and Order 13-21 mandates that all commercial and industrial ad-hoc solutions have to be subjected to Carrier Approval on a case by case basis. Each carrier is the FCC License Holder in the respective frequency or frequencies and so all deployments can transmit signal only if authorized by the Carrier. The Authorization can be issued as well as revoked by the License Holder at any time.
Pros of Off Air Systems:
Cons of Off Air System:
Pros of Carrier Sources based systems:
Cons of Carrier Sources system: