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来源：百度知道 编辑：UC知道 时间：2024/06/04 03:49:28
The closest thing to it is what is operated by the time-honored telephone companies—the Bell System. Their photocal fibre based networks are full of compromises because they've had to keep handling their large amounts of traffic ever since the beginning of the telephone age. This requirement to use existing hardware rather than throwing everything away, starting from scratch, and going broke in the process has left them with a material burden that is matched by the regulatory burden which prevents them from doing a lot of things that they'd like to do. Because of the burdens of history, neither their physical environment nor their legal environment is what they'd like if they were starting over from the beginning.
And then there's the reliability problem in importance. Since the public telecomm systems have gone heavily software-intensive, they have had their share of software faults, whereas conventional engineering practice have enlightened them to be extre
And then there's the reliability problem in importance. Since the public telecomm systems have gone heavily software-intensive, they have had their share of software faults, whereas conventional engineering practice have enlightened them to be extre
最接近它就是由历史悠久的电话公司，贝尔系统。他们photocal光纤网络是基于充分的妥协，因为他们不得不随时处理次
最接近它就是由历史悠久的电话公司，贝尔系统。他们photocal光纤网络是基于充分的妥协，因为他们已经将处理他们大量的流量都开始以来的电话时代。这要求使用现有的硬件，而不是把一切都消失，从头开始，并会在这一进程中发生了给他们留下了材料的负担，相应的监管负担，妨碍了他们做了很多事情，他们想做的事。由于历史的负担，无论是他们的物理环境，也没有他们的法律环境，是他们想如果他们开始了从一开始。
然后还有可靠性问题的重要性。由于公共通信系统已经大量的软件密集型，他们有自己的软件故障，而传统的工程实践已开明他们非常小心，要改变任何东西。只有大型的组织有智力创造性采取这种痛苦，但它的收益回报的可靠性。