NEC SL2100 - Page 570

Item
No.
Item Input Data Description Default
18 Silence Compression
(VAD) Threshold
0 ~ 30
(Self-adjustment and -
20 dB ~ + 10 dB) (for
VoIPDB mode)
7 ~ 20
(Self-adjustment and -
13 dB ~ 0 dB) (for Built-
In V
oIP 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)
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.
20
28 Priority Codec Setting 0 = G.711 PT
1 = Not Used
2 = G.729 PT
3 = G.722
4 = G.726
5 = Not Used
The option selected here determines what
other codec options are applied by priority.
0
33 G.722 Audio Frame 1 = 10 ms
2 = 20 ms
3 = 30 ms
4 = 40 ms
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.
3
35 G.722 Jitter Buffer -
Minimum
0 ~ 300 ms (for VoIPDB
mode)
10 ~ 300 ms* (for Built-In
VoIP mode)
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.
30
36 G.722 Jitter Buffer -
Average
Set the average G.722 Jitter Buffer. 60
37 G.722 Jitter Buffer -
Maximum
Set the maximum G.722 Jitter Buffer. 120
38 G.726 Audio Frame 1 = 10 ms
2 = 20 ms
3 = 30 ms
4 = 40 ms
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.
3
39 G.726 Silence Com-
pression (VAD) Mode
0 = Disable
1 = Enable
Select whether to compress silence with
G.726. When there is silence, the RTP
packet is not sent.
0
40 G.726 Jitter Buffer -
Minimum
0 ~ 300 ms (for VoIPDB
mode)
10 ~ 300 ms* (for Built-In
VoIP mode)
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.
30
41 G.726 Jitter Buffer -
Average
Set the average G.726 Jitter Buffer. 60
42 G.726 Jitter Buffer -
Maximum
Set the maximum G.726 Jitter Buffer. 120
49 RTP Filter 0 = Disable
1 = Enable
2 = Enable (include
SSRC)
To avoid incorrect voice pass connection,
this Program checks the sending side ad-
dress from received RTP packet at
VoIPDB.
1
Conditions
None
SL2100 ISSUE 2.0
2-546 Program 84 : Hardware Setup for VoIPDB
Program
84