branch connection的用法和樣例：
例句
- Each WAN connection type uses a Layer 2 protocol to encapsulate traffic while it is crossing the WAN link.
當它跨越廣域網路鏈接的時候，每個廣域網路連接使用第二層協定來封裝流量。 - If the lines of a Multilink connection fall below the following percentage of capacity for the following period of time, reduce the connection by one line.
減少多鏈路連接的一條線路，如果線路佔用小於其容量的下列百分比。
