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.