Account/Codec Settings; Firmware Version 1.0.1.20 - Grandstream Networks GXV3275 Administration Manual

ACCOUNT/CODEC SETTINGS

DTMF
DTMF Payload Type
Preferred Vocoder
ILBC Frame Size
Enable RFC5168 Support
H.264 Image Size
H.264 Profile Type
Video Bit Rate

Firmware Version 1.0.1.20

This parameter specifies the mechanism to transmit DTMF digits. There
are 3 supported modes: in audio which means DTMF is combined in the
audio signal (not very reliable with low-bit-rate codecs), via RTP
(RFC2833), or via SIP INFO. The default setting is "RFC2833".
This parameter sets the payload type for DTMF using RFC2833. Default
is 101. The valid range is from 96 to 127.
5 different vocoder types are supported on the phone, including G.711
A-law (PCMA), G.711 U-law (PCMU), G.722, G.726-32 and iLBC. Users
can configure vocoders in a preference list that is included with the same
preference order in SDP message. Arrange your preferred vocoder
orders using the Up and Down button.
Select the iLBC frame size when iLBC is selected. Users can select
20ms or 30ms. The default setting is 30ms.
If set to "Yes", RFC5168 support will be enabled for video call. The
default setting is "No".
Select the H.264 image size from "720P" "4CIF" "VGA" "CIF" "QVGA"
and "QCIF". The default setting is 720P.
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.
Select the H.264 profile type from "Baseline Profile" "Main Profile" "High
Profile" or "BP/MP/HP". The default setting is "Baseline Profile". 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 bit rate for video call. The default setting is 2048 kbps. The
valid range is from 32 - 2048 kbps. 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.
Note: For some network environment, the default setting "720P" might
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