ITU-T H.721-2015
IPTV terminal devices: Basic model (Study Group 16)

Standard No.

ITU-T H.721-2015

Release Date

2015

Published By

International Telecommunication Union (ITU)

ITU-T H.721-2015 history

• 2009 GB/T 9941-2009 High speed tool steel sheets and plates
• 1988 GB/T 9941-1988 High speed tool steel sheets and plates--Technical requirements