图1：从联系人的功能菜单项中选择“Edit Before Call”

Figure 2: Select the original number you would like to call, then input the prefix or choose one from pre-stored list, and finally click the "Dial" button/menu to make the call.

图2：选择要拨打的号码，然后输入适当的前缀（或者从预存前缀中选择一个），最后单击“Dial”按钮/菜单拨号。

Figure 3: The Configuration window, to edit the pre-stored list. Click the "Register PhoneHelper" will register "phonehelper.dll" to the system if the "Edit Before Call" item doesn't appear on the Contacts menu. Click the "Un-Register PhoneHelper" to un-register it.

图3：设置窗口。可以编辑预存前缀号码。如果"Edit Before Call"菜单没有出现在联系人的功能菜单里，单击"Register PhoneHelper"按钮将重新向系统注册"phonehelper.dll"；如果要注销"phonehelper.dll"，请单击"Un-Register PhoneHelper"。