CAN/CSA-ISO/IEC 8802-5A AMD 1
Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 5: Token Ring Access Method and Physical Layer Specifications - Amendment 1: Dedicated Token Ring Operation and Fibre Optic Media (Adopted Amendment 1:1998 to ISO/IEC 8802-5:1998 / ANSI/IEEE 802.5:1998)