TIA ANSI/TIA-568-B.1-5 [ Revised ]

This Standard specifies minimum requirements for telecommunications cabling within an environment that uses telecommunications enclosures in its infrastructure. A telecommunications enclosure as defined in ANSI/TIA/EIA-569-B is a case or housing that is dedicated to the telecommunications function and related support facilities. Just like a telecommunications room, the telecommunications enclosure is a common access point for backbone and building pathways. The use of telecommunications enclosures is a specific implementation and not a general case. A telecommunications enclosure is intended to serve a smaller floor area than a telecommunications room (see TIA-EIA 569-B). One must plan in advance if a telecommunications enclosure is needed and make sure that the introduction of this space will not create issues regarding the structured cabling systems, the management and administration of the installation.

TE's may be used as an addition to the minimum requirements of TIA-569-B that require one telecommunications room per floor and recommend an additional TR for each area up to 1000 m² (10000 ft²). The number of TRs required or recommended in TIA-569-B is not reduced by the use of TEs. TE's may also be used for serving certain environments like classrooms, entrance lobbies, or historic buildings.

This Standard provides requirements to retain the integrity of a structured cabling system, when a telecommunications enclosure is required.