In packet switching, the computer system that provide the interface between users and the node to node network. The functions of the exchange include network protocol, packet sequencing and routing.

• 在包[分组]交换技术中,提供用户和“网点到网点”网络之间接口的一种计算机系统。这种交换机的功能包括实现网络协议、包定序和路由选择。