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Enable RFC5168
Support
Video FEC Mode
FEC Payload Type
Packetization Mode
H.264 Image Size
Use H.264 Constrained
Profiles
H.264 Profile Type
Video Bit Rate
SDP Bandwidth Attribute
Enables/disables RFC5168 mechanism for video calls. RFC5168 allows SIP party to request the
sender to refresh its video frame in H.264, or refresh the full picture in VP8.
The default setting is "Yes".
If set to 0, FEC is not sent by separate port. If set 1, FEC is sent by separate port.
Default setting is 0.
Configures FEC payload type. The range is 96-126. Default setting is 120.
Set video packetization mode. If set to "Single NAL Unit Mode", the packetization mode will be
negotiated as single NAL unit mode when dial video calls, if the other party does not support the
negotiation, then single NAL unit mode will be used for video encoding by default. If set to "Non-
Interleaved Mode", the packetization mode will be negotiated as Non-interleaved mode when dial
video calls, If the other party does not support negotiation, then the Non-interleaved mode will be
used for for video encoding by default; If set to "Prefer Non-Interleaved Mode", the packetization
mode will be negotiated as prefer Non-interleaved mode when dial video calls, if the other party
does not support the negotiation, then prefer Non-interleaved mode will be used for video
encoding by default.
Sets the H.264 image size. It can be selected from the dropdown list.
720P
● 720P
● 4CIF
● VGA
● CIF
● QVGA
● QCIF
Note: For some network environment, the default setting "720P" might be too high that causes
no video or video quality issue during video call. In this case, please change "H.264 Image Size"
to "VGA" or "CIF" and change "Video Bit Rate" to "384kbps" or lower. The default setting is 720P.
Configures that whether to set H.264 constrained profiles.
The default setting is "No" .
Selects the H.264 profile type from the dropdown list.
● Baseline Profile
● Main Profile
● High Profile
● BP/MP/HP (Default Setting)
Note: Lower levels are easier to decode, but higher levels offer better compression. Usually, for
the best compression quality, choose "High Profile"; for playback on low-CPU machines or
mobile devices, choose "Baseline Profile". If "BP/MP/HP" is selected, all three profiles "Baseline
Profile" "Main Profile" and "High Profile" will be used for negotiation during video decoding to
achieve the best result. This is usually used in video conference when there is higher
requirement on the video.
Configures the bit rate for video call. It can be selected from the dropdown list. The default
setting is 2048 kbps. The valid range is from 32 – 2048 kbps.
Note: The video bit rate can be adjusted based on the network environment. Increasing the video
bit rate may improve video quality if the bandwidth is permitted. If the bandwidth is not
permitted, the video quality will decrease due to packet loss. For some network environment, the
default setting "720P" might be too high that causes no video or video quality issue during video
call. In this case, please change "H.264 Image Size" to "VGA" or "CIF" and change "Video Bit
Rate" to "384kbps" or lower.
Sets the SDP bandwidth attribute. It can be selected from the drop-down list. The default setting
is "Media Level".
● Standard: use AS format in session level; use TIAS format in media level
● Media Level: use AS format in media level.
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