Augmented Category 6 Category 6 A CLC TR 50173-99-1 TIA/EIA-TSB-155 TIA/EIA-568-B.2-10 ISO/IEC 11801 A1.1 Class E A Class F A ISO/IEC 11801 A1.2 Category 7 A ISO/IEC TR 24750 ISO/IEC 11801 Cabling for 10GBASE-T - A Tangled Web The impact of pre-standard products on the supply industry
Mike Gilmore Standards Activities Member: JTC1 SC25 WG3: Generic Cabling Convenor: WG3 CITG: Cabling Implementation Convenor: WG3 IPTG: Industrial Premises (Cabling) Convenor: TC215 WG1: IT Cabling Secretary: TC215 WG2 Mike Gilmore Managing Director e-ready Building Chairman TCT7: Telecommunications - Installation Requirements Chairman TCT7/-/1: Infrastructure design, planning and commissioning TCT7/-/3: Infrastructure standards - UK implementation panel FIA www.fia-online.co.uk www.fia-online.co.uk/tiab Technical and Standards Director Fibreoptic Industry Association Director Telecommunications Infrastructure Advisory Board Mobile: +44 (0) 7860 110563 e-mail: mike.gilmore@btinternet.com
Cabling Categories and Classes Component ANSI TIA/EIA Link/channel Component ISO/IEC CLC BSI Link/channel Class A Class B Category 3 Category 5e Category 6 Category 3 Category 5e Category 6 Performance Category 5 Category 6 Category 7 Class C Class D Class E Class F Frequency Frequency Frequency Frequency
Application Support ANSI TIA/EIA Link/channel ISO/IEC CLC BSI Link/channel Category 5e Class D 1000BASE-T Gigabit Ethernet
Famous Quotes Customers The cheque s in the post Alan Hansen You ll win nothing with kids Mike Gilmore Never trust an even numbered Category Mike Gilmore There ll never be an application that only operates over Category 6 cabling
UCISA - Q1, 2006 Dissenting Voices. Category 6 may be a better investment than Category 5e for new-build installations. In its lifetime the cabling will probably support several generations of equipment. The capital cost is higher, but the long-term cost of ownership may well be lower than Category 5e. Cabling suppliers You ve already got Category 5 Buy Category 6 now!
10GBASE-T: IEEE 802.3an IEEE 802.3an:2006 55.7.2 Link segment transmission parameters A link segment consisting of up to 100 m of Class E that meets the transmission parameters of this subclause provides a reliable medium nominal impedance delay parameters The transmission parameters of the link segment include insertion loss ELFEXT NEXT loss (NEXT) MDNEXT loss (PSNEXT) return loss extended to 500 MHz by extrapolating the formulas with appropriate adjustments for length when applicable as specified in: ISO/IEC TR-24750; TIA/EIA TSB-155; EN 50173-99-1. extended to 500 MHz by utilizing the equations referenced in: ISO/IEC TR-24750; TIA/EIA TSB-155; EN 50173-99-1. Requirements for the alien crosstalk (AXT) coupled between link segments: ISO/IEC TR-24750, TIA/EIA TSB-155, EN 50173-99-1. A link segment consisting of up to 100 m of Class F
10GBASE-T: IEEE 802.3an IEEE 802.3an:2006 Supported link segment distances 55 m 100 m 55.7.2 Link segment transmission parameters Cabling Class E unscreened Category 6 unscreened Class E screened Category 6 screened Cabling reference ISO/IEC TR 24750, EN 50173-99-1 TIA/EIA TSB-155 ISO/IEC TR 24750, EN 50173-99-1 TIA/EIA TSB-155 Class F ISO/IEC 11801
10GBASE-T Technical Reports TIA/EIA TSB-155 ISO/IEC TR 24750 Guidelines for the assessment and mitigation of installed Category 6 cabling to support 10GBASE-T Information technology - Assessment and mitigation of installed balanced cabling channels in order to support IEEE802.3 10GBASE-T CLC TR 50173-99-1 Cabling guidelines in support of IEEE802.3 10GBASE-T Based on ISO/IEC 24750 but with improved text re-mitigation (taken from both other TRs) BSI PD CLC TR 50173-99-1 Cabling guidelines in support of IEEE802.3 10GBASE-T
10GBASE-T Technical Reports TR Cabling intended for the validation of installed cabling re-verification of performance to 500MHz determination of AXT PSANEXT and PSAACR-F intended for the validation of installed CHANNELS AXT failures dealt with by relaxed limits based on insertion loss and length trade-offs between PSANEXT and PSAACR-F based on measured results for an installed channel mitigation techniques NOT intended for the the specification of new material
70 10GBASE-T PSANEXT Attenuation dependent parameter 4-pair average shall be 2.5 db higher than limits shown 60 50 IL = 35.9 db = ~100 m X1 = 62 db db 40 30 20 IL = 20.3 db = ~55 m X1 = 47 db IL 6.3 db X1 = 33.5 db 10 0 1 10 100 1000 Frequency (MHz)
10GBASE-T PSAELFEXT Attenuation and length dependent parameter 4-pair average shall be 4 db higher than limits shown 70 60 50 db 40 30 20 10 IL = 35.9 db = ~100 m X2 = 37.9 db IL = 20.3 db = ~55 m X2 = 33.7 db IL 10 db X2 = 32.5 db 0 1 10 100 1000 Frequency (MHz)
AXT Testing
Mitigation Techniques the number of connections involving connecting hardware with high coupling; including screened connectors that are not individually screened; screened connecting hardware with poor transfer impedance; the performance, length and dressing of equipment cords. PROCESSES TO IMPROVE SPECIFIC ANEXT FAILURES Unbundle and randomise cords SOURCES OF SPECIFIC ANEXT FAILURES Increase the distance between cords at each location Utilise cords sufficiently specified to mitigate the AXT coupling Reduce the number of connections in the channel Increase separation distance between interfaces at each location Utilise longer cords (within channel limits) Unbundle and randomise the installed cables at appropriate ends SOURCES OF SPECIFIC AACR-F FAILURES as above plus the performance, length and dressing of the entire channel; the mixture of short and long channels. PROCESSES TO IMPROVE SPECIFIC AACR-F FAILURES As above plus Segregate long and short channels
70 60 Class E Channel Class E Chnl RL Class E Chnl ll Class E Chnl NEXT Class E Chnl PSNEXT Class E Chnl ELFEXT Class E Chnl PSELFEXT NEXT, PSNEXT informative for IL < 4.0 db ACR (i.e. NEXT- IL), PSACR normative db 50 40 30 20 10 RL informative for IL < 3.0 db Parameters not shown ACR PSACR DC loop resistance Resistance unbalance Operating voltage Current capacity Power capacity 1 Coupling attenuation Unbalance attenuation Delay Delay skew 0 1 10 100 1000 Frequency (MHz) 544+36/ f ns (max) 50 ns (max) 1 Not present in EN 50173 standards
70 10GBASE-T Cabling 10GBASE-T Chnl RL 10GBASE-T Chnl ll 10GBASE-T Chnl NEXT 10GBASE-T Chnl PSNEXT 10GBASE-T Chnl ELFEXT 10GBASE-T Chnl PSELFEXT 60 50 40 Parameters not shown PSANEXT PSAELFEXT db 30 20 10 0 1 10 100 1000 Frequency (MHz) Delay (2-500 MHz) 580 ns Delay skew (all f) 50 ns (max)
70 60 Class F Channel Class F Chnl RL Class F Chnl ll Class F Chnl NEXT Class F Chnl PSNEXT Class F Chnl ELFEXT Class F Chnl PSELFEXT NEXT, PSNEXT informative for IL < 4.0 db ACR (i.e. NEXT- IL), PSACR normative db 50 40 30 20 10 RL informative for IL < 3.0 db Parameters not shown ACR PSACR DC loop resistance Resistance unbalance Operating voltage Current capacity Power capacity 1 Coupling attenuation Unbalance attenuation Delay Delay skew 0 1 10 100 1000 Frequency (MHz) 544+36/ f ns (max) 50 ns (max) 1 Not present in EN 50173 standards
The Hierarchical Principle Component ANSI TIA/EIA Link/channel Component ISO/IEC CLC BSI Link/channel Class A Class B Category 3 Category 5e Category 6 Aug. Cat. 6 Category 3 Category 5e Category 6 Aug. Cat. 6 Performance Category 5 Category 6 Category 6 A Category 7 Class C Class D Class E Class E A Class F Category 7 A Class F A Frequency Frequency Frequency Frequency
New Performance Standards ISO/IEC ISO/IEC 11801 Ed.2 A1.1 11801 Ed.2 A1.2 Information technology: Generic cabling for customer premises Class E A and Class F A channels Amendments to channel Classes D, E and F Deadline: 02/08 Information technology: Generic cabling for customer premises Class E A and Class F A links Amendments to link Classes D, E and F Category 6 A and Category 7 A components Amendments to component Cats 5, 6 and 7 ~ 12/08 ANSI TIA/EIA -568-B -568-B.2 Addendum 10 Commercial Building Telecommunications Cabling Standard Balanced Cabling Transmission performance specifications for 4-pair 100 Ω Augmented Category 6 cabling Deadline: Q1, 08
Comparisons CHANNELS Class E A is more stringent than Augmented Category 6 NEXT PSNEXT ACR-F PSACR-F CABLES Augmented Category 6 = Category 6 A CONNECTIONS Class E A is more stringent than Augmented Category 6 NEXT PSNEXT PERMANENT LINKS Class E A is more stringent than Augmented Category 6 Augmented Category 6 is more stringent than Class E A NEXT PSNEXT RL PSAACR-F
Cable Constructions ISO/IEC 11801: 2002 ACRONYM X X / X X X CLC TR 50173-1: 2008 A.1 OVERALL SCREEN U = Unscreened F = Foil screened S = Braid screened SF = Braid and foil screened CABLE ELEMENT TP = Twisted pair Q = Quad ELEMENT SCREEN U = Unscreened F = Foil screened U/UTP Typical CA: Type I Typical CA: Type II U/FTP S/FTP Typical CA: Type III F/UTP Typical CA: Type II Typical CA: Type III SF/UTP
Conclusions Mike Gilmore Never trust an even numbered Category Mike Gilmore There ll never be an application that only operates over Category 6 cabling. Category 6 may be a better investment than Category 5e for new-build installations.? UCISA - Q1, 2006 In its lifetime the cabling will probably support several generations of equipment.? The capital cost is higher, but the long-term cost of ownership may well be lower than Category 5e.? Cabling suppliers You ve already got Category 6 Buy Augmented Category 6/Category 6 A now!
CLC TR 50173-99-1 Augmented Category 6 Category 6 A Class E A ISO/IEC 11801 A1.1 TIA/EIA-TSB-155 TIA/EIA-568-B.2-10 Class F A ISO/IEC 11801 A1.2 Category 7 A ISO/IEC TR 24750 ISO/IEC 11801 The End