Broadband Integrated Services Digital Network (B-ISDN) - Synchronous Digital Hierarchy (SDH) based user network access - Physical layer interfaces for B-ISDN applications; English version ETS 300300:1995
V interfaces at the digital Service Node (SN) - Interface at the VB5.2 reference point for the support of broadband or combined narrowband and broadband Access Networks (ANs) - Part 1: Interface specification (incl. Diskette!!!)
