It's a spanning tree if there's also at least one path between any two points, i.e., no network nodes are left unconnected.
如果任意两点之间有且只有一条通路，则构成了一棵生成树。即没有网络节点是孤立的。
2
In addition, the Global Positioning System feature in the handset facilitates 'location tracking' while roaming in remote and unconnected areas in Thuraya's network.