HUAWEI VP9050 Executive Video Terminal
User Guide
9 Captions
Issue 03 (2011-12-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
67
9
Captions
9.1 Configuring Captions
During a conference, you can create a caption, and then overlay the caption on the video sent
by the local site. The caption can be overlaid on the top, in the middle, or at the bottom of the
video.
The terminal supports T.140 and non-T.140 captions. Table 9-1 describes the differences
between these two types of captions.
Table 9-1
Differences between T.140 and non-T.140 captions
Non-T.140 Caption
T.140 Caption
A non-T.140 caption will be
superimposed on the local video.
A T.140 caption will be sent to remote sites and
displayed on the remote displays without being
superimposed on the local video.
SIP and H.323 terminals can send and
receive captions.
Only H.323 terminals can send and receive
captions.
No restriction is imposed on the
terminals that send or receive
non-T.140 captions.
If a T.140 caption is shared, both the sending and
receiving parties in a conference must support
T.140 captions. Otherwise, a terminal that does not
support T.140 captions cannot receive the shared
T.140 caption.
Non-T.140 captions can be sent only
from terminals in a conference, and
cannot be sent from the
ResourceManager that is the
videoconferencing management
software.
If both the sending and receiving parties in a
conference support T.140 captions, a T.140
caption can be sent using any of the following
methods:
Sending the caption from the chair site
Sending the caption from the ResourceManager
NOTE
Captions can be sent from either party in a point-to-point
call.
The terminals' software is different from each other. Therefore, you may need to set only
certain parameters instead of all of them when you prepare a caption.
Step 1
Choose
Settings
>
Caption
, and then set the parameters listed in Table 9-2.
