Bearer Management was meant to facilitate user control over the network connections. There are open and close functions for found connections. One thing it does not do is actually configure these connections. They must already be configured by the system.
It is also meant to be able to group connections together to make it easier to smoothly switch between connections, such as migrating from Wi-Fi to mobile cellular data, somewhat like Media Independent Handover (MIH) or also Unlicensed Mobile Access (UMA) specification. If you are interested in an open source library to help with handovers, look at Open MIH at SourceForge.
At the time Qt's Bearer Management was first developed, Symbian was the most used and arguably the most important mobile OS. Symbian had the ability to seamlessly migrate connections between technologies without dropping...