Yealink VC120, Administrator'S Manual

Page: 161 / 319

Configuring Call Preferences
145
5.
(Optional) If Yealink device has audio problems with certain device, select
Enabled
from
the pull-down list of
Special audio codec byte sequence
.
6.
Click
Confirm
to accept the change.
Video Codecs
The video codec that the system uses to establish a call should be supported by the server.
When placing a call, the system will offer the enabled video codec list to the server and then use
the video codec negotiated with the called party according to the priority.
The following table summarizes the supported video codecs on the system:
Name MIME Type Bit Rate Frame Rate Frame Size
H.264 High
Profile
H264/90000
90 kbps to
2048 kbps
5 fps to
30 fps
Tx: WQVGA,360P, 448P,
540P, 720P, 1080P
Rx: Conventional Size
Below 1080P
H.264 H264/90000
H.263 H263/90000
Tx: CIF, 4CIF
RX: QCIF, CIF, 4CIF