The communication infrastructure of the system is based on the available phone lines and PSTN.

系统的通讯机制是基于现存的电话线和PSTN。

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Before we dive in to the details of unified access, distributed, and the heterogeneous aspects of this solution, we need to turn our attention to the communication infrastructure itself.

在讨论这种解决方案在统一访问、分布式和异构等方面的细节之前，我们需要先将目光转向通信基础设施本身。

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An important part of the solution to managing this complexity is the provision of a common infrastructure for service communication, mediation, transformation, and integration.

管理这种复杂性的解决方案的一个重要部分就是提供一个用于服务通信、协调、转换和集成的基础设施。

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And Venezuela, that used to have the highest quality infrastructure of communication of Latin America, has now one that is crumbling down.

NPR: Venezuela Copes with Crumbling Infrastructure

Best of all, thanks to the enormous investment the U.S. Navy and its counterparts have made in the ships, sensors, communication gear, and other infrastructure needed for sea based missile defenses, the costs of putting such a capability in place are a fraction of those associated with other alternatives.

CENTERFORSECURITYPOLICY: Get On With It: Time To Deploy Sea-Based Missile Defenses

Once the infrastructure has moved to satellite communication, everything else falls into place much more naturally.

BBC: The key to preventing lost planes