pnBAS EN 50700:2025

This document specifies the optical fibre access network cabling within single- and multi-subscriber premises termed the premises distribution access network (PDAN). The premises can comprise single or multiple buildings. The cabling specified is intended to be pre-installed, in readiness for subsequent connection of the multi-subscriber premises to an access providers infrastructure to support deployment of optical broadband networks. This document does not specify either the access network cabling external to the premises or the cabling within the subscriber space for onward distribution of services beyond the customer premises equipment. This document specifies: a) the structure and configuration of the optical fibre cabling; b) cabling performance requirements; c) implementation options. Annex A contains information on network segments not covered by this document. Safety practices in relation to optical power hazard are specified in EN 60825-2. Optical powers higher than the hazard levels specified in EN 60825-2 are not considered in this document. Safety (electrical safety, fire, etc.) and electromagnetic compatibility (EMC) requirements are outside the scope of this document and are covered by other standards and regulations. However, information given in this document can be of assistance in meeting these standards and regulations.