NEC SL2100 Programming Manual page 577

ISSUE 2.0
Item Item
No.
08 G.729 Silence Com-
pression (VAD) Mode
09 G.729 Jitter Buffer -
Minimum
10 G.729 Jitter Buffer -
Average
11 G.729 Jitter Buffer -
Maximum
17 Jitter Buffer Mode Set
the mode of the Jitter
Buffer.
18 Silence Compression
(VAD) Threshold
28 Priority Codec Setting 0 = G711 PT
32 G.722 Audio Frame
34 G.722 Jitter Buffer -
Minimum
35 G.722 Jitter Buffer -
Average
36 G.722 Jitter Buffer -
Maximum
37 RTP Filter
Programming Manual
Input Data
0 = Disable Select whether to compress silence with
1 = Enable G.729. When there is silence, the RTP
packet is not sent.
When VAD is enabled the CPU will stop
sending silence packets but the IP phone
will continue to transmit silence packets.
0 ~ 300 ms (for VoIPDB Set the minimum value of the Jitter Buffer
mode) of G.729 is set. Jitter is the variation in the
10 ~ 300 ms* (for Built-In time between packets arriving and the buf-
VoIP mode) fer allows this variation to be absorbed.
Set the average G.729 Jitter Buffer.
Set the maximum G.729 Jitter Buffer.
1 = static 1 = Size set to the fixed amount for the co-
3 = Self adjusting dec.
3 = The minimum/maximum range for the
codec is used and adjust at any time, re-
gardless of silence.
0 ~ 30 Set the voice level judged to be silence.
(Self-adjustment and - Change value based .30
20 dB ~ + 10 dB) (for This entry is ignored if silence compres-
VoIPDB mode) sion is disabled in 84-01-03 with G.711, or
7 ~ 20 84-01-06 with G.729.
(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)
The option selected here determines what
2 = G729 PT other codec options are applied by priority.
3 = G.722 PT
1 = 10 ms Maximum number of G.722 Audio Frames.
2 = 20 ms G.722 assumes the audio signal made by
3 = 30 ms a specimen by 16kHz and the frame of
4 = 40 ms 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.
0 ~ 300 ms (for VoIPDB Set the minimum value of the Jitter Buffer
mode) of G.722 is set. Jitter is the variation in the
10 ~ 300 ms* (for Built-In time between packets arriving and the buf-
VoIP mode) fer allows this variation to be absorbed.
Set the average G.722 Jitter Buffer.
Set the maximum G.722 Jitter Buffer.
0 = Disable
1 = Enable
2 = Enable (include
SSRC)
Description
SL2100
Default
0
20
40
Program
80
84
3
20
0
3
30
60
120
1
2-553