因为要评副高职称了，必须交篇5000字的论文，可是本人才疏学浅，又在基层运营商做技术管理，实在没有什么拿手的，放眼观望：现在也就NGN什么的吃香，可是自己是一知半解，想乘收集资料时好好学习，诚恳望高手能多赐教啊：
1，NGN的定义:这个INCLUDING是否说NGN可以提供电信以外的业务？TELECOMMUNICATION又是什么概念呢？
这个UNRESTRICTED指的服务提供商，包括接入商吗？又如何UNRESTRICTED呀？
http://www.itu.int/ITU-T/studygroups/com13/ngn2004/working_definition.html:
Definition of Next Generation Network
A Next Generation Network (NGN) is a packet-based network able to provide services including Telecommunication Services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It offers unrestricted access by users to different service providers. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users.
