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ISO/IEC 11801

April 06, 2024

International standard ISO/IEC 11801 Information technology — Generic cabling for customer premises specifies general-purpose telecommunication cabling systems (structured cabling) that are suitable for a wide range of applications (analog and ISDN telephony, various data communication standards, building control systems, factory automation). It is published by ISO/IEC JTC 1/SC 25/WG 3 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It covers both balanced copper cabling and optical fibre cabling.

The standard was designed for use within commercial premises that may consist of either a single building or of multiple buildings on a campus. It was optimized for premises that span up to 3 km, up to 1 km2 office space, with between 50 and 50,000 persons, but can also be applied for installations outside this range.

A major revision was released in November 2017, unifying requirements for commercial, home and industrial networks.

Classes and categories edit

The standard defines several link/channel classes and cabling categories of twisted-pair copper interconnects, which differ in the maximum frequency for which a certain channel performance is required:

  • Class A: Up to 100 kHz using Category 1 cable and connectors
  • Class B: Up to 1 MHz using Category 2 cable and connectors
  • Class C: Up to 16 MHz using Category 3 cable and connectors
  • Class D: Up to 100 MHz using Category 5e cable and connectors
  • Class E: Up to 250 MHz using Category 6 cable and connectors
  • Class EA: Up to 500 MHz using category 6A cable and connectors (Amendments 1 and 2 to ISO/IEC 11801, 2nd Ed.)
  • Class F: Up to 600 MHz using Category 7 cable and connectors
  • Class FA: Up to 1000 MHz using Category 7A cable and connectors (Amendments 1 and 2 to ISO/IEC 11801, 2nd Ed.)
  • Class BCT-B: Up to 1000 MHz using with coaxial cabling for BCT applications. (ISO/IEC 11801-1, Edition 1.0 2017-11)
  • Class I: Up to 2000 MHz using Category 8.1 cable and connectors (ISO/IEC 11801-1, Edition 1.0 2017-11)
  • Class II: Up to 2000 MHz using Category 8.2 cable and connectors (ISO/IEC 11801-1, Edition 1.0 2017-11)

The standard link impedance is 100 Ω. (The older 1995 version of the standard also permitted 120 Ω and 150 Ω in Classes A−C, but this was removed from the 2002 edition.)

The standard defines several classes of optical fiber interconnect:

  • OM1*: Multimode, 62.5 μm core; minimum modal bandwidth of 200 MHz·km at 850 nm
  • OM2*: Multimode, 50 μm core; minimum modal bandwidth of 500 MHz·km at 850 nm
  • OM3: Multimode, 50 μm core; minimum modal bandwidth of 2000 MHz·km at 850 nm
  • OM4: Multimode, 50 μm core; minimum modal bandwidth of 4700 MHz·km at 850 nm
  • OM5: Multimode, 50 μm core; minimum modal bandwidth of 4700 MHz·km at 850 nm and 2470 MHz·km at 953 nm
  • OS1*: Single-mode, maximum attenuation 1 dB/km at 1310 and 1550 nm
  • OS1a: Single-mode, maximum attenuation 1 dB/km at 1310, 1383, and 1550 nm
  • OS2: Single-mode, maximum attenuation 0.4 dB/km at 1310, 1383, and 1550 nm

*Grandfathered

OM5 edit

OM5 fiber is designed for wideband applications using SWDM multiplexing of 4–16 carriers (40G=4λ×10G, 100G=4λ×25G, 400G=4×4λ×25G) in the 850–953 nm range.

Category 7 edit

 
Category 7 S/FTP cable

Class F channel and Category 7 cable are backward compatible with Class D/Category 5e and Class E/Category 6. Class F features even stricter specifications for crosstalk and system noise than Class E. To achieve this, shielding was added for individual wire pairs and the cable as a whole. Unshielded cables rely on the quality of the twists to protect from EMI. This involves a tight twist and carefully controlled design. Cables with individual shielding per pair such as Category 7 rely mostly on the shield and therefore have pairs with longer twists.[1]

The Category 7 cable standard was ratified in 2002, and primarily introduced to support 10 gigabit Ethernet over 100 m of copper cabling.[2] It contains four twisted copper wire pairs, just like the earlier standards, terminated either with GG45 electrical connectors or with TERA connectors rated for transmission frequencies of up to 600 MHz.[3]

However, in 2006, Category 6A was ratified for Ethernet to allow 10 Gbit/s while still using the conventional 8P8C connector. Care is required to avoid signal degradation by mixing cable and connectors not designed for that use, however similar. Most manufacturers of active equipment and network cards have chosen to support the 8P8C for their 10 gigabit Ethernet products on copper and not the GG45, ARJ45, or TERA.[4] Therefore, the Category 6 specification was revised to Category 6A to permit this use; products therefore require a Class EA channel (ie, Cat 6A).

As of 2019 some equipment has been introduced which has connectors supporting the Class F (Category 7) channel.

Note, however, that Category 7 is not recognized by the TIA/EIA.

Category 7A edit

Class FA (Class F Augmented) channels and Category 7A cables, introduced by ISO 11801 Edition 2 Amendment 2 (2010), are defined at frequencies up to 1000 MHz, suitable for multiple applications including CATV (862 MHz).[citation needed]

The intent of the Class FA was to possibly support the future 40 gigabit Ethernet: 40GBASE-T. Simulation results have shown that 40 gigabit Ethernet may be possible at 50 meters and 100 gigabit Ethernet at 15 meters.[citation needed] In 2007, researchers at Pennsylvania State University predicted that either 32 nm or 22 nm circuits would allow for 100 gigabit Ethernet at 100 meters.[5][6]

However, in 2016, the IEEE 802.3bq working group ratified the amendment 3 which defines 25GBASE-T and 40GBASE-T on Category 8 cabling specified to 2000 MHz. The Class FA therefore does not support 40G Ethernet.

As of 2017 there is no equipment that has connectors supporting the Class FA (Category 7A) channel.

Category 7A is not recognized in TIA/EIA.

Category 8 edit

 
Cross-section of a Category 8 F/FTP cable

Category 8 was ratified by the TR43 working group under ANSI/TIA 568-C.2-1. It is defined up to 2000 MHz and only for distances up to 30 m or 36 m, depending on the patch cords used.

ISO/IEC JTC 1/SC 25/WG 3 developed the equivalent standard ISO/IEC 11801-1:2017/COR 1:2018, with two options:[7][8][9]

  • Class I channel (Category 8.1 cable): minimum cable design U/FTP or F/UTP, fully backward compatible and interoperable with Class EA (Category 6A) using 8P8C connectors;
  • Class II channel (Category 8.2 cable): F/FTP or S/FTP minimum, interoperable with Class FA (Category 7A) using TERA or GG45.

Abbreviations for twisted pairs edit

Main article: Twisted pair § Cable shielding

Annex E, Acronyms for balanced cables, provides a system to specify the exact construction for both unshielded and shielded balanced twisted pair cables. It uses three letters - U for unshielded, S for braided shielding, and F for foil shielding - to form a two-part abbreviation in the form of xx/xTP, where the first part specifies the type of overall cable shielding, and the second part specifies shielding for individual cable elements.

Common cable types include U/UTP (unshielded cable); U/FTP (individual pair shielding without the overall screen); F/UTP, S/UTP, or SF/UTP (overall screen without individual shielding); and F/FTP, S/FTP, or SF/FTP (overall screen with individual foil shielding).

2017 edition edit

In November 2017, a new edition was released by ISO/IEC JTC 1/SC 25 "Interconnection of information technology equipment" subcommittee. It is a major revision of the standard which has unified several prior standards for commercial, home, and industrial networks, as well as data centers, and defines requirements for generic cabling and distributed building networks.

The new series of standards replaces the former 11801 standard and includes six parts:[7][10][11]

ISO/IEC Standard Title Replaces Description
ISO/IEC 11801-1 Part 1: General requirements ISO/IEC 11801 Generic cabling requirements for twisted-pair and optical fiber cables
ISO/IEC 11801-2 Part 2: Office premises ISO/IEC 11801 Cabling for commercial (enterprise) buildings
ISO/IEC 11801-3 Part 3: Industrial premises ISO/IEC 24702 Cabling for industrial buildings, with applications including automation, process control, and monitoring
ISO/IEC 11801-4 Part 4: Single-tenant homes ISO/IEC 15018 Cabling for residential buildings, including 1200 MHz links for CATV/SATV applications
ISO/IEC 11801-5 Part 5: Data centers ISO/IEC 24764 Cabling for high-performance networks used by data centers
ISO/IEC 11801-6 Part 6: Distributed building services — Cabling for distributed wireless networks for building automation and IOT devices

Versions edit

  • ISO/IEC 11801:1995 (Ed. 1)
  • ISO/IEC 11801:2000 (Ed. 1.1) – Edition 1, Amendment 1
  • ISO/IEC 11801:2002 (Ed. 2)
  • ISO/IEC 11801:2008 (Ed. 2.1) – Edition 2, Amendment 1
  • ISO/IEC 11801:2010 (Ed. 2.2) – Edition 2, Amendment 2
  • ISO/IEC 11801-1:2017, -1:2017/Cor 1:2018, -2:2017, -3:2017, -3:2017/Amd 1:2021, -3:2017/Cor 1:2018, -4:2017, -4:2017/Cor 1:2018, -5:2017, -5:2017/Cor 1:2018, -6:2017, -6:2017/Cor 1:2018 (As of September 2023, this set is current.)

See also edit

References edit

  1. ^ "Comprehensive Tutorial of Cat5e vs Cat6 vs Cat6A vs Cat7". Derek. Retrieved December 18, 2021.
  2. ^ "What Ever Happened to Category 7?". Fluke Networks. 2018-12-05. Retrieved 2020-07-29.
  3. ^ Nielsen, Allan (2008), (PDF), Tyco Electronics, p. 11, archived from the original (PDF) on February 3, 2014, retrieved March 11, 2012
  4. ^ Hansen, Carl G. (November 2010). "10GBASE-T for Broad 10_Gigabit Adoption in the Data Center". Ethernet Alliance November 2010.
  5. ^ . News release. Pennsylvania State University. November 14, 2007. Archived from the original on February 22, 2012. Retrieved July 9, 2011.
  6. ^ Rick C. Hodgin (November 14, 2007). . TGDaily blog. Archived from the original on August 3, 2009. Retrieved July 9, 2011.
  7. ^ a b Flatman, Alan (2013-05-16). "ISO/IEC TR 11801-99-1: Guidance on 40GBASE-T Cabling -a tutorial-" (PDF). Retrieved 2014-01-26.
  8. ^ Flatman, Alan (2013-11-11). "Update on ISO/IEC 11801-99-1 Guidance on 40GBASE-T Cabling" (PDF). Retrieved 2014-07-09.
  9. ^ Flatman, Alan (2014-01-23). "Update on ISO/IEC 11801-99-1 40GBASE-T Cabling Guidelines" (PDF). Retrieved 2014-07-09.
  10. ^ "Standards - ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment". ISO.org. Retrieved 2016-10-02.
  11. ^ International Organization for Standardization. "Interconnection of information technology equipment". International Organization for Standardization. Retrieved 23 January 2018.

Further reading edit

  • International standard ISO/IEC 11801: Information technology — Generic cabling for customer premises.
  • European standard EN 50173: Information technology — Generic cabling systems. 1995.

April 06, 2024
11801, international, standard, information, technology, generic, cabling, customer, premises, specifies, general, purpose, telecommunication, cabling, systems, structured, cabling, that, suitable, wide, range, applications, analog, isdn, telephony, various, d. International standard ISO IEC 11801 Information technology Generic cabling for customer premises specifies general purpose telecommunication cabling systems structured cabling that are suitable for a wide range of applications analog and ISDN telephony various data communication standards building control systems factory automation It is published by ISO IEC JTC 1 SC 25 WG 3 of the International Organization for Standardization ISO and the International Electrotechnical Commission IEC It covers both balanced copper cabling and optical fibre cabling The standard was designed for use within commercial premises that may consist of either a single building or of multiple buildings on a campus It was optimized for premises that span up to 3 km up to 1 km2 office space with between 50 and 50 000 persons but can also be applied for installations outside this range A major revision was released in November 2017 unifying requirements for commercial home and industrial networks Contents 1 Classes and categories 1 1 OM5 1 2 Category 7 1 3 Category 7A 1 4 Category 8 2 Abbreviations for twisted pairs 3 2017 edition 4 Versions 5 See also 6 References 7 Further readingClasses and categories editThis section needs additional citations for verification Please help improve this article by adding citations to reliable sources in this section Unsourced material may be challenged and removed Find sources ISO IEC 11801 news newspapers books scholar JSTOR January 2019 Learn how and when to remove this template message The standard defines several link channel classes and cabling categories of twisted pair copper interconnects which differ in the maximum frequency for which a certain channel performance is required Class A Up to 100 kHz using Category 1 cable and connectors Class B Up to 1 MHz using Category 2 cable and connectors Class C Up to 16 MHz using Category 3 cable and connectors Class D Up to 100 MHz using Category 5e cable and connectors Class E Up to 250 MHz using Category 6 cable and connectors Class EA Up to 500 MHz using category 6A cable and connectors Amendments 1 and 2 to ISO IEC 11801 2nd Ed Class F Up to 600 MHz using Category 7 cable and connectors Class FA Up to 1000 MHz using Category 7A cable and connectors Amendments 1 and 2 to ISO IEC 11801 2nd Ed Class BCT B Up to 1000 MHz using with coaxial cabling for BCT applications ISO IEC 11801 1 Edition 1 0 2017 11 Class I Up to 2000 MHz using Category 8 1 cable and connectors ISO IEC 11801 1 Edition 1 0 2017 11 Class II Up to 2000 MHz using Category 8 2 cable and connectors ISO IEC 11801 1 Edition 1 0 2017 11 The standard link impedance is 100 W The older 1995 version of the standard also permitted 120 W and 150 W in Classes A C but this was removed from the 2002 edition The standard defines several classes of optical fiber interconnect OM1 Multimode 62 5 mm core minimum modal bandwidth of 200 MHz km at 850 nm OM2 Multimode 50 mm core minimum modal bandwidth of 500 MHz km at 850 nm OM3 Multimode 50 mm core minimum modal bandwidth of 2000 MHz km at 850 nm OM4 Multimode 50 mm core minimum modal bandwidth of 4700 MHz km at 850 nm OM5 Multimode 50 mm core minimum modal bandwidth of 4700 MHz km at 850 nm and 2470 MHz km at 953 nm OS1 Single mode maximum attenuation 1 dB km at 1310 and 1550 nm OS1a Single mode maximum attenuation 1 dB km at 1310 1383 and 1550 nm OS2 Single mode maximum attenuation 0 4 dB km at 1310 1383 and 1550 nm Grandfathered OM5 edit This section needs additional citations for verification Please help improve this article by adding citations to reliable sources in this section Unsourced material may be challenged and removed Find sources ISO IEC 11801 news newspapers books scholar JSTOR January 2019 Learn how and when to remove this template message OM5 fiber is designed for wideband applications using SWDM multiplexing of 4 16 carriers 40G 4l 10G 100G 4l 25G 400G 4 4l 25G in the 850 953 nm range Category 7 edit This section needs additional citations for verification Please help improve this article by adding citations to reliable sources in this section Unsourced material may be challenged and removed Find sources ISO IEC 11801 news newspapers books scholar JSTOR January 2019 Learn how and when to remove this template message nbsp Category 7 S FTP cableClass F channel and Category 7 cable are backward compatible with Class D Category 5e and Class E Category 6 Class F features even stricter specifications for crosstalk and system noise than Class E To achieve this shielding was added for individual wire pairs and the cable as a whole Unshielded cables rely on the quality of the twists to protect from EMI This involves a tight twist and carefully controlled design Cables with individual shielding per pair such as Category 7 rely mostly on the shield and therefore have pairs with longer twists 1 The Category 7 cable standard was ratified in 2002 and primarily introduced to support 10 gigabit Ethernet over 100 m of copper cabling 2 It contains four twisted copper wire pairs just like the earlier standards terminated either with GG45 electrical connectors or with TERA connectors rated for transmission frequencies of up to 600 MHz 3 However in 2006 Category 6A was ratified for Ethernet to allow 10 Gbit s while still using the conventional 8P8C connector Care is required to avoid signal degradation by mixing cable and connectors not designed for that use however similar Most manufacturers of active equipment and network cards have chosen to support the 8P8C for their 10 gigabit Ethernet products on copper and not the GG45 ARJ45 or TERA 4 Therefore the Category 6 specification was revised to Category 6A to permit this use products therefore require a Class EA channel ie Cat 6A As of 2019 update some equipment has been introduced which has connectors supporting the Class F Category 7 channel Note however that Category 7 is not recognized by the TIA EIA Category 7A edit This section needs additional citations for verification Please help improve this article by adding citations to reliable sources in this section Unsourced material may be challenged and removed Find sources ISO IEC 11801 news newspapers books scholar JSTOR January 2019 Learn how and when to remove this template message Class FA Class F Augmented channels and Category 7A cables introduced by ISO 11801 Edition 2 Amendment 2 2010 are defined at frequencies up to 1000 MHz suitable for multiple applications including CATV 862 MHz citation needed The intent of the Class FA was to possibly support the future 40 gigabit Ethernet 40GBASE T Simulation results have shown that 40 gigabit Ethernet may be possible at 50 meters and 100 gigabit Ethernet at 15 meters citation needed In 2007 researchers at Pennsylvania State University predicted that either 32 nm or 22 nm circuits would allow for 100 gigabit Ethernet at 100 meters 5 6 However in 2016 the IEEE 802 3bq working group ratified the amendment 3 which defines 25GBASE T and 40GBASE T on Category 8 cabling specified to 2000 MHz The Class FA therefore does not support 40G Ethernet As of 2017 there is no equipment that has connectors supporting the Class FA Category 7A channel Category 7A is not recognized in TIA EIA Category 8 edit Parts of this article those related to this section need to be updated Please help update this article to reflect recent events or newly available information June 2019 nbsp Cross section of a Category 8 F FTP cableCategory 8 was ratified by the TR43 working group under ANSI TIA 568 C 2 1 It is defined up to 2000 MHz and only for distances up to 30 m or 36 m depending on the patch cords used ISO IEC JTC 1 SC 25 WG 3 developed the equivalent standard ISO IEC 11801 1 2017 COR 1 2018 with two options 7 8 9 Class I channel Category 8 1 cable minimum cable design U FTP or F UTP fully backward compatible and interoperable with Class EA Category 6A using 8P8C connectors Class II channel Category 8 2 cable F FTP or S FTP minimum interoperable with Class FA Category 7A using TERA or GG45 Abbreviations for twisted pairs editMain article Twisted pair Cable shielding Annex E Acronyms for balanced cables provides a system to specify the exact construction for both unshielded and shielded balanced twisted pair cables It uses three letters U for unshielded S for braided shielding and F for foil shielding to form a two part abbreviation in the form of xx xTP where the first part specifies the type of overall cable shielding and the second part specifies shielding for individual cable elements Common cable types include U UTP unshielded cable U FTP individual pair shielding without the overall screen F UTP S UTP or SF UTP overall screen without individual shielding and F FTP S FTP or SF FTP overall screen with individual foil shielding 2017 edition editIn November 2017 a new edition was released by ISO IEC JTC 1 SC 25 Interconnection of information technology equipment subcommittee It is a major revision of the standard which has unified several prior standards for commercial home and industrial networks as well as data centers and defines requirements for generic cabling and distributed building networks The new series of standards replaces the former 11801 standard and includes six parts 7 10 11 ISO IEC Standard Title Replaces DescriptionISO IEC 11801 1 Part 1 General requirements ISO IEC 11801 Generic cabling requirements for twisted pair and optical fiber cablesISO IEC 11801 2 Part 2 Office premises ISO IEC 11801 Cabling for commercial enterprise buildingsISO IEC 11801 3 Part 3 Industrial premises ISO IEC 24702 Cabling for industrial buildings with applications including automation process control and monitoringISO IEC 11801 4 Part 4 Single tenant homes ISO IEC 15018 Cabling for residential buildings including 1200 MHz links for CATV SATV applicationsISO IEC 11801 5 Part 5 Data centers ISO IEC 24764 Cabling for high performance networks used by data centersISO IEC 11801 6 Part 6 Distributed building services Cabling for distributed wireless networks for building automation and IOT devicesVersions editISO IEC 11801 1995 Ed 1 ISO IEC 11801 2000 Ed 1 1 Edition 1 Amendment 1 ISO IEC 11801 2002 Ed 2 ISO IEC 11801 2008 Ed 2 1 Edition 2 Amendment 1 ISO IEC 11801 2010 Ed 2 2 Edition 2 Amendment 2 ISO IEC 11801 1 2017 1 2017 Cor 1 2018 2 2017 3 2017 3 2017 Amd 1 2021 3 2017 Cor 1 2018 4 2017 4 2017 Cor 1 2018 5 2017 5 2017 Cor 1 2018 6 2017 6 2017 Cor 1 2018 As of September 2023 ref this set is current See also editEthernet over twisted pair Twisted pair TIA EIA 568 ISO IEC JTC 1 SC 25References edit Comprehensive Tutorial of Cat5e vs Cat6 vs Cat6A vs Cat7 Derek Retrieved December 18 2021 What Ever Happened to Category 7 Fluke Networks 2018 12 05 Retrieved 2020 07 29 Nielsen Allan 2008 AMP NETCONNECT Guide to ISO IEC 11801 2nd Edition Including Amendment 1 PDF Tyco Electronics p 11 archived from the original PDF on February 3 2014 retrieved March 11 2012 Hansen Carl G November 2010 10GBASE T for Broad 10 Gigabit Adoption in the Data Center Ethernet Alliance November 2010 Researchers push transmission rate of copper cables News release Pennsylvania State University November 14 2007 Archived from the original on February 22 2012 Retrieved July 9 2011 Rick C Hodgin November 14 2007 UPDATE Cat 7 copper theorized to transmit 100 Gbit s in excess of 100 meters 328 ft using future modems TGDaily blog Archived from the original on August 3 2009 Retrieved July 9 2011 a b Flatman Alan 2013 05 16 ISO IEC TR 11801 99 1 Guidance on 40GBASE T Cabling a tutorial PDF Retrieved 2014 01 26 Flatman Alan 2013 11 11 Update on ISO IEC 11801 99 1 Guidance on 40GBASE T Cabling PDF Retrieved 2014 07 09 Flatman Alan 2014 01 23 Update on ISO IEC 11801 99 1 40GBASE T Cabling Guidelines PDF Retrieved 2014 07 09 Standards ISO IEC JTC 1 SC 25 Interconnection of information technology equipment ISO org Retrieved 2016 10 02 International Organization for Standardization Interconnection of information technology equipment International Organization for Standardization Retrieved 23 January 2018 Further reading editInternational standard ISO IEC 11801 Information technology Generic cabling for customer premises European standard EN 50173 Information technology Generic cabling systems 1995 Retrieved from https en wikipedia org w index php title ISO IEC 11801 amp oldid 1213812506 Category 8, wikipedia, wiki, book, books, library,

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