CLC/TR 50173-99-1:2007

Introduction
1 Scope
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Channel requirements
  4.1 General
  4.2 Return loss
  4.3 Insertion loss
  4.4 Near-end crosstalk loss (NEXT)
  4.5 Attenuation to crosstalk loss ratio near-end (ACR-N)
  4.6 Attenuation to crosstalk loss ratio far-end (ACR-F)
  4.7 Alien (exogenous) crosstalk
  4.8 Propagation delay
  4.9 Delay skew
5 Guidance for mitigation
  5.1 Planning certification, measurement and documentation
  5.2 Mitigation techniques if in-channel parameters of the
      channel from Clause 4 are not met
  5.3 Mitigation techniques in case external parameters
      of the channel (alien noise) from 4.7 are not met
Annex A (informative) Permanent link performance guidelines
Annex B (normative) Alien crosstalk margin computation
Annex C (informative) Analytical approach to alien crosstalk
        mitigation

This Technical Report a) specifies the transmission performance for channels to support 10 GBASE-T as specified in IEEE 802.3an, b) specifies the methods to assess whether installed Class E and Class F channels meet IEEE 802.3an requirements,c) provides mitigation techniques to improve the performance of an existing installation to meet the IEEE 802.3an requirements.NOTE 1 The channel transmission performance specified in this TR is derived from IEEE 802.3an.NOTE 2 IEEE 802.3an specifies requirements beyond the frequency range specified for EN 50173 1:2007, Class E, and additional parameters to those specified for Class E and Class F cabling in EN 50173-1:2007.NOTE 3 This Technical Report does not re-specify the requirements for Class E and Class F channels of EN 50173-1:2007.