Wireless access system is a very important device in wireless local area network ( wlan ) , it needs not only to manage the mobile experiments in wlan , but also to bridge the wire network to the wireless 无线接入系统是无线局域网中非常重要的设备,它既要负责无线局域网内移动设备的管理,又要将有线网络和无线网络进行桥接。
This special protocol is based on the i - idlc protocol , which make the system more stable , and more automatic . this software includes two independent function blocks : the hdlc protocol and a user - defined protocol 架构在完整的hdlc协议之上的双交换网络备份协议也使得整个接入系统更可靠、更稳定、更自动化，可以做到完全不需人工设置。
The object studied in this paper is an embedded functional modu1e of sp30 sw1tch system produced by xi " an datang telephone corp . it can provide various service intelfaces of ddn for users 本研究的目的是研制一种属于西安大唐电信有限公司生产的sp30交换机系统的嵌入式功能模块，能够为用户提供各种ddn网业务接口，这个模块称为数据接入系统。
Trying to measure what is happening with a scope or other instument is also problematical , because the instrument cables and input characteristics modify the network characteristics by their very presence when connected 试图用测量仪或其他工具测试此时的系统变化也不太行得通，因为一旦仪器接入系统，它的测试线和输入特性会改变系统电路的特征。
The blackberry personal information manager ( pim ) is a portable device that connects users to corporate e - mail and other systems across a wireless connection , providing instant , 24x7 access to business critical information 黑莓经理的个人信息细胞( pim )是一种便携式装置连接到企业用户的电子邮件和其他无线接入系统相望,提供即时、 24 ?获取商业关键信息
Since td - scdma proposal is one of third - generation telecommunication standard in the world , so the scdma access system which working at tdd mode represents the future communication business development 由于国际电信联盟( itu )采用td - scdma标准作为第三代移动通信的国际三大标准之一，因此以tdd模式工作的scdma无线接入系统代表着未来通信技术发展的方向。
Especially deserve to indication , wireless access system only needs lower incipient plough into enough implement cover with livelong area , can availably debase investment threshold , swell bank roll resist risk capability 特别值得指出的是，无线接入系统只需较低的初期投入就可以实现整个区域的覆盖，可有效地降低电信运营的投资门槛，增强资金的抗风险能力。
But when it comes to terminal platform , there are two troublesome problems , which are lack of interactivity and self - constraint . that will influence the extension , popularization , and standardization of the system 但是就目前的接入方案中的终端平台来看，主要存在着两个棘手的问题，那就是缺乏交互性和自我封闭性，这就限制了接入系统的扩展、推广及标准化。
The final test shows that the customer - connected system designed and implemented in this paper could receive and dispose the order request of the digital television customers automatically . it achieves basically of the aim of this project 最终测试结果表明,文中所设计并完成的用户接入系统能够自动接收并处理数字电视vod系统的用户点播请求,基本达到设计目标和要求。
In virtue of driving demand inland data access operation development , varied broad band access means develop rapid , thereinto broad band wireless access system become new specially trust of communicate company because of agility and shortcut 由于国内数据接入业务发展的强劲需求，各类宽带接入手段发展迅速，其中宽带无线接入系统以其灵活性、快捷性成为运营商的新宠。
