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2001 年底，PICMG 成立了一個委員會，開發一系列新的規格，旨在滿足下一代電信要求。3.X 系列更名為先進電信運算架構（或 ATCA），並選擇了 8U 歐洲卡作為選擇的外型規格。該規格針對電信運營商級市場。使用雙星、雙雙星和網狀交換網狀架構拓撲，該規格將能夠處理業界要求的龐大頻寬需求、高可用性（99.999% 正常運行時間）和服務品質問題。
外形規格採用 8U x 280mm 的卡片尺寸，插入 1.2 英寸間隔的背板。較大的卡片可以容納更多元件的空間，而插槽之間的距離更寬則允許更高的元件。此外，背板允許從外部來源的 48VDC 輸入分配到個別插槽卡。插槽對插槽頻寬約為 7500 MB/秒（假設每對 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.