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Update on Standards No.1
Update on Standards No.2

TSB-75 Additional Horizontal Cabling Practices for Open Offices
TSB-75 will be incorporated into the ANSI/TIA/EIA-568-B document.

TSB-75 provides requirements for two new open office cabling systems: the MUTOA (Multi-User Telecommunications Outlet Assembly) and the Consolidation Point (CP). Requirements are detailed below.

The Multi-User Telecommunications
Outlet Assembly (MUTOA)

• Houses several telecommunications outlets/connectors for
  several work areas in one location
   
• Solid conductor 4-pair UTP cables or fiber optic cables are run from the telecommunications room (TR) to the MUTOA and
  terminated
   
• MUTOA is permanently mounted in or on a building structure that is in close proximity to a furniture cluster or open area
   
• MUTOA allows horizontal cabling to remain intact when the open-office plan is changed
   
• Each work area cable shall be labeled with a unique identifier
• Work area cables extend from the MUTOA through the furniture raceways
• Work area cables are made of stranded conductor cable, terminated with modular plugs on both ends
• Work area cables connecting the MUTOA to the work area equipment must be labeled on both ends
• MUTOA should serve a maximum of 6-12 work areas
• UTP work area cables are limited in length
• Administration should follow TIA-606 Standard

The Consolidation Point (CP)

• An interconnection point between horizontal cables from the
  telecommunications room to a location immediately adjacent
  to the work area
   
• The consolidation point must be permanently mounted in or
  on a building structure and must not be mounted in the
  furniture cluster, in the ceiling, or any other obstructed area
   
• Cross connections are not allowed
   
• Consolidation point must not be used as a cross-connect or
  point of administration
• Due to the effect of NEXT on multiple connection in close
  proximity, locate consolidation point at least 15m (49’) from
  telecommunications room
   
• Consolidation Point and Transition Points cannot be combined in any single horizontal link
   
• Each Consolidation Point should accommodate a maximum
  of 12 work areas with consideration to future growth
   
• Administration should follow TIA-606

  Cables from the consolidation point to the work area must be solid conductor 4-pair UTP or optical fiber cabling. Work area equipment is connected to the horizontal using a standard patch cable (maximum recommended length of 3m/10’).

Update on Standards No.1

Update on standards developments and test parameters.

In 2003 the TIA/EIA 568 standard will be twelve years old, as will the category 5 test parameters. In that time processing speeds in the work area have more than doubled, and network transmission rates have increased a hundred fold. In late 1997 and early 1998 Various standard bodies announced the development of a new set of standards designed to provide a higher level of performance in the communications cabling infrastructure. These new standards will allow Unshielded Twisted Pair (UTP) cabling system to be better positioned to support the demands of the latest network applications. The latest developments include:

• The first formal announcement that Category 6 will be developed which came from the international ISO/IEC JTC 1/SC25/WG3 cabling standards committee in September, 1997.

• The ANSI?TIA?EIA TR41.8.1 Connecting Hardware Task Group’s third draft of a document that will be an addendum to the ‘568-A standard. This document Additional Transmission Performance Specifications for 4-pair 100 Ohm Category 5, Enhanced Category 5m and Category 6 Cabling will provide the specific transmission performance requirements for Cat 5e and Cat 6 connecting hardware.

• The TR41.8.1 UTP Systems Task Group’s introduction of the first draft of a standard for Transmission Performance Specifications for 4-pair 100 Ohm Category 6 Cabling.

• This document proposes transmission performance for category 6 links and channels as well as cable and connectors.

While the highest test frequencies for Cat 5E and Cat 6 is still uncertain (100 Mhz, and 200 Mhz or 250 Mhz respectively) the fact that new measurement criteria will be included is clear. The new criteria includes Power Sum Near End Crosstalk (PSNEXT), Return Loss, Far End Crosstalk (FEXT) and Equal Level FEXT (ELFEXT), as well as more stringent NEXT and Attenuation requirements. The proposed Category 6 specification is designed to double the available bandwidth of Category 5 while the intent of the Category 5E standard is to provide performance specifications beyond a minimally compliant category 5 system.

1998 has also seen some exciting developments in high speed network development. The adoption in June of the first section of the Gigabit Ethernet Standard by the IEEE 802.3z committee, and the expectation of a first ballot in July on a submission from the 802.3ab committee for a UTP based system (1000BASE-T) has given network managers a concrete basis for planning for the future gigabit-to-desktop applications. With the stated goal of utilizing standard category 5 cabling and the selection of the PAM-5 encoding scheme, the 802.3ab committee has provided a clear migration path from 100BASE-T to 1000BASE-T networks.

As always, Somtech, Mayflex, Hubbell Premise Wiring is dedicated to ongoing research & development to ensure that their products exceed the latest standards. As a member of numerous standards organizations including TIA, IEEE, and the ATM Forum, Hubbell Premise Wiring products and installations will provide you with current and developing industry standards and network applications.

The Administration Standard for the Telecommunications Infrastructure of Commercial Buildings

Identical cables spliced together must be administered as a single cable. Each horizontal cable must be labeled at both ends Termination hardware containing one or more termination positions (i.e., patch panel jack) may be administered as one termination position A unique identifier must be marked on each termination hardware unit or its label Station terminations may be labeled on the face plate, housing or the connector itself Labels can be adhesive, insert or other special purpose labels - Labels must meet legibility, defacement and adhesion requirements specified in UL969 (D16)   Color Coding Demarcation point (Pantone 150C) - Central Office Network connections on customer’s side (Pantone 353C) Common equipment (Pantone 246C) - PVBX, LANs 1st level backbone - Main to Intermediate 2nd level backbone (Pantone 422C) - Intermediate to Telecom Horizontal cabling (closet end only) (Pantone 291C) - Work Area Inter-building backbone (Pantone 465C)- Campus Environment Auxiliary circuits (Pantone 101C) - Alarm, Security, etc. Key telephone systems (Pantone 184C)

Designed to provide a uniform administration scheme for the telecommunications infrastructure that is independent of applications. Intended to reduce the large number of incompatible and incomplete administration approaches in existence. Telecommunications Administration Areas: Terminations Media Pathways Spaces Bonding/grounding NOTE: End user equipment at the station or application specific devices in the closet are not addressed Identifiers Designations assigned to elements of the telecommunications infrastructure Identifiers used to access records of the same type must be unique Encoded identifiers designate the element and provide information about that element Records are the collection of information about or related to a specific element. A typical administration system includes: Labels Drawings Work orders Records Reports

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