G726-32 ITU Payload
Configures G726-32 payload type for ITU packing mode. Payload 2 is static and payload dynamic
is 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”.
Opus Payload Type
Defines the desired value (96-126) for the payload type of the Opus codec.
The default value is 123.
DTMF
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 codecs).
● RFC2833, which means to specify DTMF with RTP packet. Users could know the packet is
DTMF in the RTP header as well as the type of DTMF.
● SIP INFO, which uses SIP INFO to carry DTMF. The defect of this mode is that it’s easily to
cause desynchronized of DTMF and media packet if the SIP and RTP messages are required
to transmitted respectively.
The default setting is “RFC2833”.
DTMF Payload Type
Configures the RTP payload type that indicates the transmitted packet contains DTMF digits.
Valid range is from 96 to 126.
Default value is 101.
Enable Audio RED with
FEC
If set to “Yes”, FEC will be enabled for audio call.
The default setting is “No”.
Audio FEC Payload Type
Configures audio FEC payload type. The valid range is from 96 to 126.
The default value is 121.
Audio RED Payload Type
Configures audio RED payload type. The valid range is from 96 to 126.
The default value is 124.
Silence Suppression
Enables the silence suppression/VAD feature. If it is set to “Yes”, when silence is detected, a
small 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”.
Voice Frames Per TX
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 users, it is recommended to use the default setting, as incorrect settings may influence
the audio quality.
The default setting is 2.
Preferred Video Codec
Preferred Video Codec
Lists the available and enabled Video codecs for this account. Users can enable the specific
video 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.
Enable Video FEC
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 function will take up part of bandwidth and reduce call rate.
The default setting is “Yes”.
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