求翻译：在IP网络下的公务电话之间的通话功能，包括点对点的呼叫，组呼功能， 群呼功能，本地电话本的管理以及界面的人性化操作。是什么意思？

Ip network service telephone calls between functions, including point-to-point call, group call functionality, group calling, local phone book management, as well as the interface of the user-friendly operation.

正在翻译，请等待...

Under between the IP network service telephone telephone conversation function, including the point-to-point call, the group shouts the function, the group calling function, local telephone this management as well as contact surface user friendly operation.

In IP networks between business phone call functions, including point-to-point call, group call feature, group calling features, management and the interface of humanization of the local telephone operations.

正在翻译，请等待...