Thus, a subscriber has reliable access to the network and may be reached with a call, while enjoying the freedom of mobility within the whole coverage area.
通过这样的方式，一个签约用户就能够可靠地接入其所属的网络，并且可以接收呼叫，同时可以在整个网络的覆盖范围内享受自由移动的便利。