NEC SL2100 Programming Manual page 570

SL2100
Item
No.
18 Silence Compression
(VAD) Threshold
Program
84
28 Priority Codec Setting 0 = G.711 PT
33 G.722 Audio Frame
35 G.722 Jitter Buffer -
Minimum
36 G.722 Jitter Buffer -
Average
37 G.722 Jitter Buffer -
Maximum
38 G.726 Audio Frame
39 G.726 Silence Com-
pression (VAD) Mode
40 G.726 Jitter Buffer -
Minimum
41 G.726 Jitter Buffer -
Average
42 G.726 Jitter Buffer -
Maximum
49 RTP Filter
Conditions
None
2-546
Item Input Data
0 ~ 30
(Self-adjustment and -
20 dB ~ + 10 dB) (for
VoIPDB mode)
7 ~ 20
(Self-adjustment and -
13 dB ~ 0 dB) (for Built-
In VoIP mode)
0 = -20 dB (-50 dBm)
1 = -19 dB (-49 dBm)
:
7 = -13 dB (-43 dBm)
:
20 = 0 dB (-30 dBm)
:
29 = 9 dB (-21 dBm)
30 = 10 dB (-20 dBm)
1 = Not Used
2 = G.729 PT
3 = G.722
4 = G.726
5 = Not Used
1 = 10 ms
2 = 20 ms
3 = 30 ms
4 = 40 ms
0 ~ 300 ms (for VoIPDB
mode)
10 ~ 300 ms* (for Built-In
VoIP mode)
1 = 10 ms
2 = 20 ms
3 = 30 ms
4 = 40 ms
0 = Disable
1 = Enable
0 ~ 300 ms (for VoIPDB
mode)
10 ~ 300 ms* (for Built-In
VoIP mode)
0 = Disable
1 = Enable
2 = Enable (include
SSRC)
Description
Set the voice level judged to be silence.
Change value based 0dB (-30 dBm).
This entry is ignored if silence compres-
sion is disabled in 84-01-03 with G.711 or
84-01-06 with G.729.
The option selected here determines what
other codec options are applied by priority.
Maximum number of G.722 Audio Frames.
G.722 assumes the audio signal made by
a specimen by 16 kHz and the frame of 10
ms is assumed to be a unit to 64 kbps by
the encoding compressed method.
Set the minimum value of the Jitter Buffer
of G.722 is set. Jitter is the variation in the
time between packets arriving and the buf-
fer allows this variation to be absorbed.
Set the average G.722 Jitter Buffer.
Set the maximum G.722 Jitter Buffer.
Maximum number of G.726 Audio Frames.
G.726 assumes the audio signal made by
a specimen by 16 kHz and the frame of 10
ms is assumed to be a unit to 32 kbps by
the encoding compressed method.
Select whether to compress silence with
G.726. When there is silence, the RTP
packet is not sent.
Set the minimum value of the Jitter Buffer
of G.726 is set. Jitter is the variation in the
time between packets arriving and the buf-
fer allows this variation to be absorbed.
Set the average G.726 Jitter Buffer.
Set the maximum G.726 Jitter Buffer.
To avoid incorrect voice pass connection,
this Program checks the sending side ad-
dress from received RTP packet at
VoIPDB.
Program 84 : Hardware Setup for VoIPDB
ISSUE 2.0
Default
20
0
3
30
60
120
3
0
30
60
120
1