ISO/IEC 9314-21:2000

Information technology — Fibre Distributed Data Interface (FDDI) — Part 21: Abstract test suite for FDDI physical layer protocol conformance testing (FDDI PHY ATS) ISO/IEC 9314-21:2000

Publication date:   Oct 26, 2000

General information

90.93 Standard confirmed   Jul 13, 2018


ISO/IEC JTC 1/SC 25 Interconnection of information technology equipment

International Standard

35.200   Interface and interconnection equipment



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This part of ISO/IEC 9314 defines a conformance test of the PHY functions in a path through an FDDI node. Figure 1 is a functional block diagram of an FDDI path. The path contains the necessary functions to repeat (that is decode and retransmit) frames through an FDDI node.
The PHY Repeat Filter is optional when there is a MAC in the repeat path. If there is no MAC in the repeat path, then the function is implemented in PHY. This test standard makes no assumption about the presence or absence of MAC on the path and is intended to operate with or without a MAC. It tests the repeat filter function wherever it is located. However, the results of some tests may be slightly different if a MAC is present.

Life cycle


ISO/IEC 9314-21:2000
90.93 Standard confirmed
Jul 13, 2018