Synway Information Engineering Co., Ltd
SMG Series Analog Gateway User Manual (Version 1.5.3)
Page 30
RTP Port Range
Supported RTP port range for the IP end to establish a call conversation, with the
lower limit of 2000 and the upper limit of 60000 and the difference between larger
than 480. The default value is 6000-10000.
Silence
Suppression
Sets whether to send comfort noise packets to replace RTP packets or never to
send RTP packets to reduce the bandwidth usage when there is no voice signal
throughout an IP conversation. The optional values are
Enable
and
Disable
, with
the default value of
Disable
.
Auto Noise
Reduction
Once this feature is enabled, the volume of the noise accompanied with the line will
be reduced automatically. By default, the feature is
disabled
.
JitterMode
Sets the working mode of JitterMode. The optional values are
Static Mode
and
Adaptive Mode
, with the default value of
Static Mode.
JitterBuffer
Acceptable jitter for data packets transmission over IP, which indicates the buffering
capacity. A larger JitterBuffer means a higher jitter processing capability but as well
as an increased voice delay, while a smaller JitterBuffer means a lower jitter
processing capability but as well as a decreased voice delay. Range of value:
0~280, calculated by ms, with the default value of 100.
JitterUnderrunLead
Sets the initial delay of packets if they are received later than JitterBuffer. Range of
value: 0~280, calculated by ms, with the default value of
200
,
Note:
Only when JitterMode is set to
Static Mode
will this item be shown.
JitterOverrunLead
Sets the initial lead inserted if packets are received earlier than 300-JitterBuffer.
Range of value: 0~280, calculated by ms, with the default value of
200
,
Note:
Only when JitterMode is set to
Static Mode
will this item be shown.
JitterMin
Sets the minimum delay that can be set by the adaptive jitter function. It can not be
larger than the value set in JitterBuffer. Range of value: 0~280, calculated by ms,
with the default value of
10
.
Note:
Only when JitterMode is set to
Adaptive Mode
will this item be shown.
JitterDecreaseRatio
Sets the rate for delay reduction under the adaptive mode. It defines the maximum
percentage of silence that can be removed for delay reduction. Range of value:
0~100, with the default value of
50
,
Note:
Only when JitterMode is set to
Adaptive Mode
will this item be shown.
JitterIncreaseMax
Sets the maximum delay that can be increased during a silence period. Range of
value: 0~280, calculated by ms, with the default value of
50
,
Note:
Only when JitterMode is set to
Adaptive Mode
will this item be shown.
Voice Gain Output
from IP
Adjusts the gain of the voice output from IP. Range of value: -24~24, calculated by
dB, with the default value of 0.
