AS 11801.2:2019 pdf free

AS 11801.2:2019 pdf free.Information technology一Generic cabling for customer premises
The horizontal cabling subsystem (equivalent to the cabling subsystem 1 of ISO/IEC 11801-1) extends from a floor distributor to the telecommunications outlet(s) connected to it. Although work area cords (equivalent to the TE cords of ISO/IEC 11801-1) and equipment cords are used to connect terminal and transmission equipment, respectively, to the cabling subsystem,they are not considered part of the cabling subsystem because they can be application specific. Horizontal cables shall be continuous from the floor distributor to the telecommunications outlets unless a consolidation point is installed (see 5.6.6).
Horizontal cabling should be designed to support the broadest set of existing and emerging applications and therefore provide the longest operational life. This will minimize disruption and the high cost of re-cabling in the work area.
Building backbone cabling should be designed for the entire life of the generic cabling system.However, it is common to adopt short-term approaches that support current and foreseeable application requirements, particularly where there is good physical access to pathways. The selection of campus backbone cabling can require a longer-term approach than that adopted for the building backbone, particularly if access to pathways is more limited.
Centralized cabling structures, as shown in Figure 4 create combined backbone/horizontal channels. The channels are provided by passive connections in the distributors. The connections are achieved by using either cross-connections or interconnections. In addition,for centralized optical fibre cabling, it is possible to create connections at the distributors using splices although this reduces the ability of the cabling to support re-configuration.
The number and type of subsystems that are included in a generic cabling implementation depends upon the geography and size of the campus or building, and upon the strategy of the user. Usually there would be one campus distributor per campus, one building distributor per building, and one floor distributor per floor. If the premises comprise only a single building which is small enough to be served by a single building distributor, there is no need for a campus backbone cabling subsystem. Similarly larger buildings can be served by multiple building distributors interconnected via a campus distributor.AS 11801.2 pdf free download.