Grandstream Networks GXV34 0 Series Manual page 38

Configures G726-32 payload type for ITU packing mode. Payload 2 is static and payload dynamic is
G726-32 ITU Payload dynamic.
The default setting is "2".
G726-32 Dynamic PT Specifies the G726-32 payload type, and the valid range is 96 to 126. The default setting is "126".
Defines the desired value (96-126) for the payload type of the Opus codec.
Opus Payload Type
The default value is 123.
Specifies the mechanism to transmit DTMF (Dual Tone Multi-Frequency) signals.
There are 3 supported modes: in audio, RFC2833, or SIP INFO.
● In audio, which means DTMF is combined in the audio signal (not very reliable with low-bit-rate
DTMF
● RFC2833, which means to specify DTMF with RTP packet. Users could know the packet is DTMF in
● SIP INFO, which uses SIP INFO to carry DTMF. The defect of this mode is that it's easily to cause
The default setting is "RFC2833".
Configures the RTP payload type that indicates the transmitted packet contains DTMF digits. Valid
DTMF Payload Type
range is from 96 to 126.
Default value is 101.
Enable Audio RED If set to "Yes", FEC will be enabled for audio call.
with FEC The default setting is "No".
Audio FEC Payload Configures audio FEC payload type. The valid range is from 96 to 126.
The default value is 121.
Type
Audio RED Payload Configures audio RED payload type. The valid range is from 96 to 126.
Type The default value is 124.
Enables the silence suppression/VAD feature. If it is set to "Yes", when silence is detected, a small
Silence Suppression quantity of VAD packets (instead of audio packets) will be sent during the period of no talking.
If set to "No", this feature is disabled. The default setting is "No".
Configures the number of voice frames transmitted per packet. When configuring this, it should be
noted that the "ptime" value for the SDP will change with different configurations here. This value is
related to the codec used and the actual frames transmitted during the in payload call. For end
Voice Frames Per TX
users, it is recommended to use the default setting, as incorrect settings may influence the audio
quality.
The default setting is 2.
Lists the available and enabled Video codecs for this account. Users can enable the specific video
Preferred Video Codec
codecs by moving them to the selected box and set them with a priority order from top to bottom.
This configuration will be included with the same preference order in the SIP SDP message.
When enabled, the video sender will temporarily allocate part of the bandwidth to one data channel
to send FEC data to system, thus to improve the video quality the receiver gets. Enabling this
Enable Video FEC
function will take up part of bandwidth and reduce call rate.
The default setting is "Yes".
codecs).
the RTP header as well as the type of DTMF.
desynchronized of DTMF and media packet if the SIP and RTP messages are required to
transmitted respectively.
Preferred Video Codec