The telephone network is perhaps the largest example of a system made up of interconnected systems, and its continual operation is a testament to the effectiveness of such systems.

电话网络也许是由互连系统组成的系统的一个最大的示例，并且它的连续工作也证明了这种系统的有效性。

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When you make a telephone call, you're using their network, and you're also making use of the peer agreements they have with other phone networks, while enjoying the use of their routing system.

每当你打电话，你就在使用他们的网络，当你在使用他们的路由系统的时候，同时也在使用移动运营商与其他电话网络之间的协议。

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Some systems, like the telephone system, use a network of cables, wires, and switching stations for point-to-point communication.

有些系统，如电话系统，使用由电缆、导线和交换台组成的网络，来进行点对点的通信。

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Meyer created a communications system that works on any telephone network and can be accessed on any mobile handset, PC or landline phone using voice messages, e-mail or SMS text.

FORBES: Magazine Article

No wonder, then, that officials were so jubilant over last month's successful privatisation of Telebras, Brazil's telecoms network, and not just because it should give the country a decent telephone system.

ECONOMIST: Brazil