英语翻译能翻译多少是多少.4.AccessNetworkfunctionalarchitectureandrelatedfunctions4.1IntroductionTheroleandfunctionofAccessNetworksshouldbeconsideredinthecontextofatotaltelecommunicationsnetwork.Atelecommunicatio

Question

英语翻译
能翻译多少是多少.
4.Access Network functional architecture and related functions
4.1 Introduction
The role and function of Access Networks should be considered in the context of a total telecommunications network.A
telecommunications network comprises all the entities (such as equipment,plant,facilities) which together provide
telecommunication services between different locations.The AN,being part of the access connection element,is
responsible for the provision of the user network interface for the access of the user to telecommunication services.The
entities that actually provide the service are the Service Nodes.
An Access Network is delimited by its interfaces.Users are connected via a User Network Interface (UNI) to the
network.The AN is connected to the SN via the Service Node Interface (SNI) and to the TMN via a Q3 interface.
4.2 General Access Network architecture and boundaries
Figure 1 shows the AN with the UNI,SNI and Q3 interface as the boundaries to other network entities.
The AN may be connected to multiple Service Nodes.In this way the AN can provide access to SNs that support
specific services,but also to multiple SNs that support the same service.The association of a UNI to the SN is static,i.e.
it is established through coordinated provisioning with the relevant SN.The allocation of access bearer capacity to an SN
is also established through provisioning.From the point of view of the SNIs this implies that the AN is perceived as
subdivided into multiple virtual ANs,at least one for each SN,but implemented within one physical configuration with
integrated management of all of the AN resources.It may be possible to allow for dynamic assignment of access bearer
capacity by the SN,but this requires a mechanism by which the SN can establish the capacity available within the
topology of an AN,which is for further study.
4.3 General protocol model for Access Network
The functional architecture of the AN is based on the layered approach defined in Recommendation G.803.This model
is used for the definition of interaction of peer entities within the AN.Figure 2 describes the layers and their
relationships.
4.4 Definition of individual functional groups
For the purpose of a more detailed description,the AN is broken down into the function groups User Port Function,
Service Port Function,Core Function,Transport Function and AN-System Management Function which are defined in
this subclause.Figure 3 gives an example of one AN functional architecture and how each of the functional groups are
interconnected.
Figure 4 shows an example of the layers that are processed in each functional group based on the example given
in Figure 3.

Answer 1

4.接入网络功能建筑及相关的功能
41介绍
这个角色和职能的接入网络时应该考虑到语境中的总电信网络.一个
通信网络的单位(包括所有设备、工厂等设施),一起提供
电信服务,在不同的地点之间.在一个被部分的访问连接元素,是
负责提供用户网络接口的权限的用户的电信服务.这个
实际上,提供服务的实体的服务节点.
一个访问网络划入其接口.连接的用户通过用户网络接口(大学)
网络.在一个连接到锡通过服务节点介面(SNI),经节TMN界面.
一般进入网络结构和4.2界限
图1显示的是与大学,SNI计接口的界限和其它网络的实体.
在一个可以被连接到多个服务节点.这样一个能提供的视点
具体服务,但同时也要多视点,支持相同的服务.这个协会的UNI到锡是静态的,如下.
它是通过协调预提与相关的锡.持票人的分配到一个锡矿存取能力
也是通过设置.从这个角度来看,这意味着一SNIs看作是
分成多个虚拟ANs,至少每一个锡,但在一台物理形态
综合管理的所有的资源.它可以允许进行动态分配的访问
能力的,但这需要一个锡锡矿机制建立的能力
一个网络拓扑,为进一步研究.
43一般协议模型为访问网络
这个功能架构的一个基于分层的方法定义在推荐G.803.该模型,
用于定义对等实体间的相互作用在一个.图2中描述的
之间的关系.
44所定义的个人官能团
的目的都是为了一个更详细的描述,一个被分解成函数组用户端口功能,
口岸功能区、核心功能的服务功能和AN-System、运输管理功能所定义的
本小节.图3给出了实例之一,每一个功能建筑的功能组织
内在的联系.
图4显示的一个例子,在每层处理官能团基于实例
图3.
自己看吧