According to industry consensus, desktop video conferencing, collaborative voice and data applications and pure voice telephony will not run well over network infrastructures that provide only best effort datagram delivery.

• 据业界调查，桌面系统视频会议、协作的声音和数据应用以及纯粹的话音电话，在只提供最佳交付数据报文的网络基础设施上不能很好地工作。