Overview of System Architecture Have a glance at Figure 1. The configuration is a 3-layer structure. Every element has capability to link with its peers and upper/lower layer. Much like the up-to-date cellular network, almost all kinds of data can be tranceived th- rough the system. Mythril didn't request a system for massive users, so circuit switching became the switching measure of the chioce [2]. Normally links between layers are required to have the overall system work out, while those within one layer are not, though they may improve system effi- cency and robustness. Links between peers can also privide another advantage. When overall system are down, partial system may still work, which means parti- al effectiveness are allowed. The more detailed description will be given in l- ater sections. This somewhat complicated architecture have disadvantages, too. Versibility often brings huge bill, but as mentioned before that's not a problem. And thank to advanced fabrication technology provided by other IEEE experts, malfunction rate of components is lower than expected. Minimization of devices (both number and size) could have been a difficult problem, but by using certain design tec- hniques we managed to get it solved. Thus the system satisfies the demands of stability and portability. ┌────────┐ │ Global Network │ 全球网路 └────────┘ ／ ｜ ＼ ╱ ｜ ＼ ┌────────┐┌────────┐┌────────┐ ┌┤Regional Network├┤Regional Network├┤Regional Network├┐ 地区网路 │└────────┘└────────┘└────────┘│ │ ／ ｜ ＼ │ │ ╱ ｜ ＼ │ │ ┌─□─────□─────□─┐ │ │ │ User User User │ │ 使用者 │ └───────────────┘ │ └──────────────────────────────┘ Figure 1. System Configuration Reference: [2] In a Circuit Switching network, a dedicated communications path is established between two stations through the nodes of the n- etwork. The path is a connected sequence of physical links bet- ween nodes. Data and Computer Communications, 7ed., W. Stallings =================================以下是翻译==================================== 系统架构概观 请见图1，该架构是一个三层式结构。每个单元都有能力与同侪和上/下层建立连结。 各种型态的资料都可以透过这套系统收发，与最先进的手机网路类似。为大量使用者提供 服务并非「密银」的要求，所以在交换技术上我们使用线路交换 [2]。 正常而言，为使整体系统能够运作，建立各层之间的连结是必要的，而同一层内的连 结并非必要，但它们可能增进系统的效率和强固程度。与同侪的连结同时也提供另一项优 点：当整体系统无法运作时，部分系统仍然可能正常运作。之後的章节会作更详尽的解说 。 这个有些复杂的系统也有缺点。多功能通常代表高价格，当然如前述我们并不为此感 到困扰。并且，得力於其他IEEE专家提供的先进制造技术，原件的故障率比预期要低。装 置的微型化(包含数量和大小)原本是个可能的难题，但我们藉由某些设计技巧解决了。因 此，这套系统满足了稳定和轻便的要求。 参考来源：[2] 线路交换：在线路交换的网路中，一个专用的通讯通道被建立在传输的两 端点之间，该通道是一个实体的连结序列。数据通讯第7版 W. Stallings --

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