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2001年底，PICMG成立了一个委员会，负责制定一系列针对下一代电信需求的新规范。3.X 系列更名为高级电信计算架构（简称 ATCA），8U Eurocard 被选为首选外形规格。该规范面向电信运营商级市场。该规范利用双星、双星和网状交换架构拓扑，将能够处理业界要求的大量带宽需求、高可用性（99.999% 的正常运行时间）和服务质量问题。
外形尺寸采用 8U x 280mm 的存储卡，插入间隔为 1.2 英寸的背板。较大的卡片可以为更多的组件留出更多的空间，而插槽之间的间距越大，可以容纳更高的组件。此外，背板允许将来自外部电源的 48VDC 输入分配到各个插槽卡。插槽间带宽约为 7500 兆字节/秒（假设每对 2.5 Gbps）。
FAQs
AdvancedTCA is an open, modular embedded computing standard originally developed for telecom and networking systems. It specifies chassis, backplanes, power architectures, and robust cooling to support high-availability, high-performance computing in demanding environments.
AdvancedTCA is designed for scalability, robust system management, and high throughput, making it well suited for systems requiring high bandwidth, redundancy, and long lifecycle support — such as communications infrastructure and data-intensive processing.
AdvancedTCA offers high-speed data throughput, extensive system management, and scalable modularity, allowing designers to build systems that handle intensive telecom, networking, and compute workloads with high reliability and robustness.
AdvancedTCA provides modular design, high-speed data transfer, robust thermal management, and system redundancy. These features help reduce development time, improve system reliability, and support scalable deployments.
Although originally designed for telecommunications infrastructure, AdvancedTCA is also used across industries where high availability, robust management, and modular scalability are valued — including networking, industrial, and defense applications.