NGN和IMS对承载网QOS方面的要求和QOS保障技术

在通信运营商推行的光进铜退和网络演进改造过程中,大量的PSTN用户割接到了NGN或IMS网络;还有大量的企事业单位也在逐步使用企业级的NGN或IMS设备更新换代原有老化的传统的DID交换机设备。现有的PSTN网络以电路交换为特征,在支持语音通信上颇有优势;NGN或IMS网络为保证语音通信的质量,对其承载网在QOS保障方面有明确的指标要求。本文论述了NGN、IMS对承载网QOS方面的指标要求以及QOS的相关保障技术。

NGN and IMS Bearer Network Requirements on the QOS and the Technology of QOS Guarantee

In the communication operators implement copper back into the light and network evolution in the process of transformation, a large number of PSTN users cut received NGN or IMS network; and a large number of enterprises and institutions are gradually the use of enterprise class NGN or IMS equipment updated the original aging traditional DID switches. The existing PSTN network with circuit switching characteristics, have advantages in supporting voice communications; NGN or IMS network in order to ensure the quality of voice communication, the network in the QOS security requirements clear indicators. This paper discusses NGN, IMS on the bearing requirements of network aspects of QOS and QOS related security technology.