Why isn't call forwarding as easy ase-mail forwarding?

呼叫转移为何不像邮件转发那么容易？

I also wanted to know if there is any call forwarding service?

我还想知道是否有电话转接服务。

Figure 11 shows the information provided by this TAB for the Call Forwarding test.

图11显示了该项为Call Forwarding测试提供的信息。

A interface is also provided for the administrator to control the call forwarding.

同时为系统管理员提供接口，允许对呼叫转移的使用加以控制。

If any one refuses the call forwarding, the system can cancel call forwarding relation timely.

若其中 任何一方回复拒绝呼转，该系统可及时取消呼转关系。