Popular areas for less life - threatening computer malfunctions include telephone billing and telephone switching software , bank statements and bank - teller machines , electronic funds - transfer systems , and motor - vehicle license data bases 通常在有些领域电脑故障并不非常危及生命，这些领域包括电话开账，电话交换软件，银行结单，银行柜员机，电子资金转让系统，汽车执照资料库等。
It is not recommended that using soft swtiching plus media gateway to replace the existing local and long distance telephone switching system . for those need to newly add and replace the local switching system will depend on the cost of the media gateway 不建议使用软交换加媒体网关的方式替换目前的本地和长途交换机，对于新增的和需要更换的本地电话交换机要视媒体网关的成本情况而定。
In some ways , it is analogues to a telephone switch - board with intelligence because it makes the connections between various functional units of the computer system and calls into operation each unit that is required by the program currently in operation 从某些方面来看，一个电话开关是智力的模拟物因为它使各种不同的计算机系统单元和呼叫连结入对每一个当前运作中的程序所需求的单位的操作。
From telefonaktiebolaget l . m . ericsson s beginnings in 1876 as a manufacturer of telephones and telephone switches , ericsson has grown into a world - leading provider of end - to - end telecommunication solutions and professional services to over 140 countries 从早期生产电话机、电话交换机发展到今天，爱立信的业务已遍布全球140多个国家，是全球领先的提供端到端全面通信解决方案以及专业服务的供应商。
Not recommend to use soft switching plus media gateway to replace the existing local and long distance switching systems . for the newly added and need to be changed local telephone switching systems , it will up to the cost of media gateway ?不建议使用软交换加媒体网关的方式替换目前的本地和长途交换机，对于新增和需要更换的本地电话交换机要视媒体网关成本情况而定，不对pstn进行大规模根本性改造；
In the paper , firstly , it talks about the stored program controlled telephone switch ( spcts ) technology , computer simulation technology and simulating training system ; secondly , it describes the software construction of spcts , compares the main styles among the maintaining and operation system of spcts , analyses the order - based maintaining and operation system of spcts , by this way , designs and achieves the simulating training system 文中首先讨论了与系统相关的程控交换机技术、计算机仿真技术和仿真训练系统；然后，描述了程控交换机的软件结构，比较了交换机维护操作系统的主要模式，分析了基于命令的程控交换机维护操作系统，进而在此基础上设计实现仿真训练系统。
Abstract : combining the tenth five _ year plan of tianjin telecommunication , the paper states some problems relating to the planning of the local telephone switching network in the new period , such as the situation that was faced for the telecommunication networks , the major questions that were needed to solve in planning , the problems of continued development in telephone services and the transit of n _ band network to b _ band network 文摘:结合天津电信“十五”规划的编制，阐述了在新时期本地电话交换网规划中所涉及的几个问题，如电信网面临的形势和规划中需要解决的重大课题、电话业务持续发展的问题及由窄带网向宽带网过渡的问题等等。
