- G.726_16
：
5, 10, 20, 30, 40, 50, 60
- G.726_16
：
5, 10, 20, 30, 40, 50, 60
- G.726_16
：
5, 10, 20, 30, 40, 50, 60
- iLBC_15
：
20
- iLBC_15
：
30
Note:
the smaller the period is, the better is the real time
performance of the voice transmission.
But when the packet becomes more, the burden of the
network will be heavier; if the period is larger, packets need
sent will become less, and the packet will become big;
Packet to PCM Gain
Set ip to PCM Gain the range is -14~6dB, in 1 dB increment
0.0
PCM to Packet Gain
Set PCM to Packet Gain the range is -14~6dB, in 1 dB
increment
0.0
Comfort Noise
Set whether send comfort noise to PCM side when receive
mute from IP side:
Disable
- Enable.
Disable
G.711
Redundant
Depth
Set RTP redundant depth when using G.711. This function
can prevent the voice from in continuous due to the packets
loss.
The options are:
- Disable
- 1
- 2
- 3
Disable
Echo Cancel
- Disable
- Enable
Note: In the call when one part hears the echo, you should
enable this function in the other opposite end.
Enable
Echo
Cancel
Tail
Length
Set the echo cancel tail length, and if within the set range,
the echo can be cancelled.
The options are:
- 8ms
- 48ms
- 128ms
128ms
Voice
Activity
Detection
Voice Activity Detection activation function may implement a
quiet voice signal compression basing on the detection
threshold, reducing the use of network bandwidth.
The options are:
Disable
- Enable.
Disable
VAD Threshold
Set VAD Threshold. The value range is:96-127 - Maximum:
- most save bandwidth, but the voice quality is the worst
- 5dB: relative big noise ( 5dB SNR) detected to be voice
- 10dB: relative big noise ( 10dB SNR) detected to be voice
- 20dB: relative big noise ( 20dB SNR) detected to be voice
occupy bandwidth most, but the voice quality is the best.
For the options above, the bandwidth save situation:
Maximum>5dB>10dB>20dB>30dB
；
Voice quality:
Maximum<5dB<10dB<20dB<30dB
30dB
First Coder
- G.711U
- G.711A
- G.723.1
- G.729
- G.711A
- G.729B
- G.729AB
- G.726_16
- G.726_24
G.711U
