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MGC Web Server Manager User’s Guide
3-19
Video Protocol
(con’t)
H264* - H.264* incorporates DCT (H.263)
compression principles, but is provided at half the
bit rate. H.264* provides CIF/4CIF video using low
bit rates and implements a fixed video rate when
the video stream of the endpoint becomes active
("people"). The endpoint that supports H.264* is
iPower.
H264 - The H.264 standard provides better
compression of video images in lower line rate
connections and is part of the Highest Common
mechanism in Video Switching conferences.
When the conference line rate is up to 384 Kbps,
and the Video Protocol is set to Auto (in both VSW
and CP conferences) the system tries to connect
the participant using H.264 video protocol first.
Only if the endpoint does not support H.264, the
system tries to connect the participant using H.263
or H.261.
When H.264 is selected, the Video Format is
disabled and set to Auto.
Notes:
• When selecting the H.261 or H.263, the system
regards it as a fixed format and disables the
dynamic adjustment of the highest common
video.
• The dynamic adjustment of the video protocol
applies only to H.320 (ISDN) participants.
The dynamic adjustment of the video protocol
supports only 30 frames per second in CIF format.
All other H.263 capabilities are disabled.
Table 3-1: Reservation Defaults - Settings1 Parameters (Continued)
Option Description