Who initiates the connection to the cell network? The aircraft, the ground server or are both ways possible?
During normal operation, each cellular device (between 1 and 8 depending on the WQAR part number) in the WQAR initiates a connection with the cell network and then to the ground server when your aircraft lands. You can further restrict the WQAR to only establish connections which meet your specifications. These specifications are usually based on the financial decisions of your airline and are implemented through the use of roaming setting restrictions. The WQAR can even regulate specific cellular networks. However, despite these restrictions, you can direct the WQAR using the ground server, to override them on an exception basis. We call this solution “Download on Demand” (DoD), which is typically used when the aircraft has landed in a (foreign) country where the WQAR is configured (for cost reasons) to NOT routinely connect to the ground server. For example, if you have a flight on its way to a country where you do not normally transmit data, and it experiences a hard landing, turbul
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