Basic rate ISDN workstation traffic patterns

At present, the PC class of machine equipped with a modem and connected to the public switched telephone network (PSTN) finds many applications; access to electronic mail services, access to office computers by home-workers, occasional access to a mainframe from an isolated office, etc. Two developments are coinciding which will affect this usage; PCs are being upgraded into much more sophisticated workstations, and the PSTN is to be replaced by the integrated services digital network (ISDN), a digital service offering much greater bandwidth. These developments will have a significant effect on the ways in which isolated machines are used. Some results are presented from an assessment made at University College London on the extent to which modes of usage currently prevalent on LANs might translate to the ISDN workstation. Measurements have been made of traffic on a L LAN, and extrapolations have been made to gauge the effects of interposing ISDN both on performance and on cost.     

LAN,ISLN与PRE—ISDN互连的一体网络

一体网络含有两层意义：１）多个专用网络变为单一网络；２）单一网络中每种业务都与原亚的专用网络中的使用完全一样，且可以和专用网的业务无隙互通。ＩＳＬＮ是ＬＡＮ中增加电话功能而实现的，它是单位内部的一体化网络。     

ISDN: A Global Solution to Transmission Needs

The concept of the integrated services digital network (ISDN) could revolutionize information management. The purpose of the ISDN is to provide a worldwide network that offers end-to-end digital connectivity supporting a wide variety of communications services. ISDN subscribers will have direct access to a high-speed digital pipeline capable of supporting simultaneous voice, data, facsimile, and various other services and calling features.     

ISDN: A Global Solution to Transmission Needs

The concept of the integrated services digital network (ISDN) could revolutionize information management. The purpose of the ISDN is to provide a worldwide network that offers end-to-end digital connectivity supporting a wide variety of communications services. ISDN subscribers will have direct access to a high-speed digital pipeline capable of supporting simultaneous voice, data, facsimile, and various other services and calling features.     

Inter-domain service management of broadband virtual private networks

The emergence of an open market for telecommunication services provides a wide range of opportunities for the provision of value-added services by providers other than public network operators. One service already available today is a Virtual Private Network (VPN) that provides dispersed corporate sites with wide-area data communication capabilities using public network services. The introduction of Broadband ISDN allows for the provision of VPN services in a more integrated fashion. However, any effective VPN service must be able to deal with the technological and organizational heterogeneities that are present when providing a high level of service functionality over an arbitrary number of administrative and technological domains. This paper presents a management service for a VPN service that addresses some multi-domain and network heterogeneity issues. It outlines how a design based on the ITU-T's Telecommunications Management Network (TMN) Recommendation was developed and how working prototypes were implemented over real broadband networks.     

一种先进的局域网仿真客户机的实现方法

异步传递方式(ATM)是实现B-ISDN的核心技术。局域网仿真是通过ATM网络来实现局域网的互连互通,是ATM的关键技术。文章参照ATM论坛的建议设计了一种局域网仿真容户机,并对该客户机的组成、原理、主要功能及其基本配置等进行了介绍、分析和描述。     

在ATM网上实现局域网功能的困难及对策

ＡＴＭ网络作为下一代网络，终将成为网络的主流，但是ＡＴＭ网要在目前传统局域网占主导地位的环境条件下成为今后的主流和发展的方向，就必须解决两个问题：首先必须使已有的众的网络应用软件能在ＡＴＭ工作站上使用；第２，ＡＴＭ网应能很容易和传统的局域网连一在起的工作站一起运作用。此文介绍了 在ＡＴＭ网上实现局域网功能所面临的困难及一些可能的解决方案。     

一种多路访问多星型冲突避免高速局域网协议

提出了一种采用避免冲突开关的多路访问多星型高速局域网协议。协议分析比较结果表明，其性能优于许多现有的LAN协议，适合于综合业务高速局域网。     

IBM计算机网络管理策略的研究

本文介绍计算机网络管理的体系结构和协议，分析了ＩＢＭ的计算机网络技术，着重论述了ＩＢＭ的网络管理策略并给出了一个它在某ＣＩＭＳ重点应用工厂的具体应用例。     

智能HLR在移动一卡多号业务中的应用

智能HLR(SmartHLR,简称SHLR)是为解决固定电话网的面向普通用户的新型增值业务(如:彩铃、一号通、号码可携带等)的业务触发和号码转换问题而提出的一种新技术。SHLR不但适用于固定电话网,而且可以引入到移动电话网内,在某些特定业务实现方案中发挥作用,包括:一卡多号(SIMN)、网间号码可携带等(NP)。本文首先介绍SHLR的作用和特点,再以一卡多号业务实现方式为例对SHLR在移动网的应用方式进行分析。