IEC 62481-1-1:2017(E) specifies the core architecture and protocols of DLNA implementations. This third edition cancels and replaces IEC 62481-1 published in 2013 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) removal of Bluetooth, printers (DMPr, +PR1+ and +PR2+), Mobile Digital Media Uploader (M-DMU), Mobile Digital Media Downloader (M-DMD), Mobile Network Connectivity Function (M NCF) and Media Interoperability Unit (MIU); b) removal of CEA2014 guidelines (RUISRC, RUISINK, RUICTRL, RUIPL); c) addition of IPv6; d) heading levels adjusted to be no deeper that heading level 5.