ITU-T H.450.4-1999
H.323 Call Waiting Supplementary Services - H Series: Multimedia Infrastructure and Audiovisual Service Systems - Multimedia Supplementary Services Research Group 16.30p

Standard No.

ITU-T H.450.4-1999

Release Date

1999

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Replace By

ITU-T H.450.4-2013

Latest

ITU-T H.450.4-2013

Scope

This Supplementary Service describes the procedures and the signalling protocol for the Call Hold supplementary service in H.323 (Packet Based Multimedia Communications Systems) networks.

ITU-T H.450.4-1999 history

• 2013 ITU-T H.450.4-2013 Call hold supplementary service for ITU-T H.323 systems (Study Group 16)
• 1999 ITU-T H.450.4-1999 H.323 Call Waiting Supplementary Services - H Series: Multimedia Infrastructure and Audiovisual Service Systems - Multimedia Supplementary Services Research Group 16.30p