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VoIP是英语Voice over Internet Protocol的缩写,字面意思是一种依靠IP网络传送话音的技术服务。简而言之就是将模拟信号数字化,以数据包的形式在IP网络上实时传递。VoIP最大的优势是其利用已有的Internet和全球IP互连的环境,比起依靠通讯卫星、地球站进行远距离通信,大大降低了运营成本。同时也降低了企业高昂的长话费用,简化了企业的网络建设。但传统的尽力而为的网络机制与技术无法满足VoIP对于语音质量的要求。QoS技术解决了这个问题。QoS(quality of service)指的利用各种技术手段提升网络服务质量的能力。为满足用户对不同应用不
VoIP is an acronym for English Voice over Internet Protocol, which literally means a technical service that relies on IP networks to deliver voice. In short, the analog signal is digitized and transmitted on the IP network in real time as a data packet. VoIP biggest advantage is its use of the existing Internet and global IP interconnection environment, compared with relying on communication satellites, earth stations for long-distance communication, greatly reducing operating costs. At the same time, it also reduces the high cost of long-distance calls and simplifies the network construction of enterprises. However, traditional best-effort network mechanisms and technologies can not meet the requirements of VoIP for voice quality. QoS technology to solve this problem. QoS (quality of service) refers to the use of various technical means to enhance the quality of network services. To meet the user for different applications do not