光纤通道为上层协议（ULP）提供了通用数据传输工具，如智能外围接口（IPI）和小型计算机系统接口（SCSI）命令集、高性能并行接口（HIPPI）数据帧、IP（互联网协议）、ANSI/IEEE 802.2等。ISO/IEC 14165 FC-FS的这一部分描述了高性能串行链路的帧和信令接口，以支持与上层协议（例如SCSI、IP、SBCC、VI）相关的光纤通道4s。它包括支持光纤通道系列文档定义的新功能的附加链接服务，以及根据现有实施经验对现有服务定义的改进和澄清。本标准还定义并包括旨在提高现有光纤通道产品性能并使这些产品适合新应用的其他功能。

Fibre Channel provides a general data transport vehicle for Upper Level Protocols (ULPs) such as Intelligent Peripheral Interface (IPI) and Small Computer System Interface (SCSI) command sets, the High-Performance Parallel Interface (HIPPI) data framing, IP (Internet Protocol), ANSI/IEEE 802.2, and others. This part of ISO/IEC 14165, FC-FS, describes the framing and signalling interface of a high-performance serial link for support of Fibre Channel 4s associated with upper level protocols (e.g., SCSI, IP, SBCCS, VI). It includes additional link services in support of new functions defined by the Fibre Channel family of documents and improvements and clarifications to the definitions of existing services as dictated by experience with existing implementations. This standard also defines and includes other capabilities designed to improve the performance of existing Fibre Channel products and fit those products for new applications.