Item
No.
Item Input Data Description Default
08 G.729 Silence Com-
pression (VAD) Mode
0 = Disable
1 = Enable
Select whether to compress silence with
G.729. When there is silence, the RTP
packet is not sent.
When V
AD is enabled the CPU will stop
sending silence packets but the IP phone
will continue to transmit silence packets.
0
09 G.729 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.729 is set. Jitter is the variation in the
time between packets arriving and the buf-
fer allows this variation to be absorbed.
20
10 G.729 Jitter Buffer -
Average
Set the average G.729 Jitter Buffer. 40
11 G.729 Jitter Buffer -
Maximum
Set the maximum G.729 Jitter Buffer. 80
17 Jitter Buffer Mode Set
the mode of the Jitter
Buffer.
1 = static
3 = Self adjusting
1 = Size set to the fixed amount for the co-
dec.
3 = The minimum/maximum range for the
codec is used and adjust at any time, re-
gardless of silence.
3
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 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)
Set the voice level judged to be silence.
Change value based .30
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 = G711 PT
2 = G729 PT
3 = G.722 PT
The option selected here determines what
other codec options are applied by priority.
0
32 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 16kHz and the frame of
10ms is assumed to be a unit to 64kbps by
the encoding compressed method.
The Audio Frame size setting is only from
IP phone to IP phone. When the IP phone
communicates to a TDM device it will al-
ways use a 20 ms frame size.
3
34 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
35 G.722 Jitter Buffer -
Average
Set the average G.722 Jitter Buf
fer. 60
36 G.722 Jitter Buffer -
Maximum
Set the maximum G.722 Jitter Buffer. 120
37 RTP Filter 0 = Disable
1 = Enable
2 = Enable (include
SSRC)
1
ISSUE 2.0 SL2100
Programming Manual 2-553
Program
84
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