Early in the 40GBASE-T Ethernet application development process, it became understood that cabling specified to a bandwidth greater than 1,000 MHz would be required to support 40 Gb/s and higher transmission speeds.  This informative International Technical Report provides initial guidelines for next generation channels specified to 1,600 MHz.  It has subsequently been determined that cabling specified to 2,000 MHz is required to support both 25GBASE-T and 40GBASE-T.

ISO/IEC TR 11801-9901 “Generic Cabling for Customer Premises – Part 9901: Guidance for Balanced Cabling in Support of at Least 40 Gbit/s Data Transmission” was developed by ISO/IEC JTC 1/SC 25 (Subcommittee 25: Interconnection of Information Technology Equipment, of ISO/IEC Joint Technical Committee 1: Information Technology) and published in October, 2014.  This Technical Report provides performance for class I and class II balanced twisted-pair cabling containing two connections and up to 30 m of cords and cable specified from 1 to 1,600 MHz.  The contents of this report have been superseded by ISO/IEC 11801-1.

ISO/IEC TR 11801-9901 Content

  • Channel Requirements using Components with Enhanced Performance and Extended Frequency (Class I and Class II)
  • Channel Requirements for Category 6A and Category 7A Components
  • Annexes addressing Assessment of Cabling Capacity for 40 Gbit/s and Characterisation of a Channel using Standardised Components with Extended Frequency

ISO/IEC TR 11801-9901 Channel Descriptions

  • Class I channels are constructed from two Category 8.1 connectors, up to 26m of Category 8.1 cable and, two 2m Category 8.1 cords
  • Class II channels are constructed from two Category 8.2 connectors, up to 26m of Category 8.2 cable and, two 2m Category 8.2 cords

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