Level 3 Communications introduced a Secure Access Cellular Service that uses both cellular and security technologies to provide a redundant and scalable option for Internet connectivity in the event that the primary fiber connection to a remote or branch location is lost.
Level 3 Secure Access Cellular uses multi-vendor cellular connectivity to provide customers a back-up network connection. If a disruption occurs, the solution is designed to switch from a dedicated Level 3 MPLS/IP Virtual Private Network (VPN) connection to cellular backup connectivity through a LTE network. This cellular backup, the Secure Access Site product tunnel (IPsec), runs over a cellular 3G or 4G network instead of a broadband or DSL connection. Level 3 manages the connection with mainstream cellular providers.
Level 3 Secure Access Cellular is now available in North America and will be available winter 2015 in Europe and spring 2016 in Latin America.
http://news.level3.com/2015-10-20-Level-3-Launches-Carrier-Neutral-Secure-Cellular-Service