NEC Univerge SV8100, Programming Manual

Page: 856 / 986

Issue 10.1 UNIVERGE SV8100
2 - 820 Program 84 : Hardware Setup for VoIP
07
G.729 Audio Frame
Maximum number of G729 Audio Frames.
G.729 assumes the audio signal made by a
specimen by 8kHz and the frame of 10ms is
assumed to be a unit to 8kbps by the
encoding compressed method.

Softphone (SP310) only
supports 20ms or 40ms
1-4
1 = 10ms
2 = 20ms
3 = 30ms
4 = 40ms 2
08
G.729 Silence Compression (VAD) Mode
Select whether to compress silence with
G.729. When there is silence, the RTP packet
is not sent.
0 = Disable
1 = Enable 0
09
G.729 Jitter Buffer - Minimum
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 buffer
allows this variation to be absorbed.
0~300ms (Note 1) 20
10
G.729 Jitter Buffer - Standard
Set the average G.729 Jitter Buffer.
0~300ms (Note 1) 40
11
G.729 Jitter Buffer - Maximum
Set the maximum G.729 Jitter Buffer.
0~300ms (Note 1) 80
17
Jitter Buffer Mode
Set the mode of the Jitter Buffer.
1 = Size set to the fixed amount for the
codec.
2 = The minimum/maximum range for the
codec is used.
3 = The minimum/maximum range for the
codec is used and adjust at any time,
regardless of silence.
Setting 2 (Self adjusting-silent period-is not
valid for IPLB. If this value is set, the
system will operate as Setting 3.
1 = static
2 = adaptive during
silence
3 = adaptive
immediately
3
18
Silence Compression (VAD) Threshold
Set the voice level judged to be silence.
Change value based.30
This entry is ignored if silence compression is
disabled in 84-01-03 with G.711, or 84-01-06
with G.729.
0-30
(self-adjustment and
-19db ~ +10db)
0 = self-adjustment
1:-19db (-49dbm)
:
20 = 0db (-30dbm)
:
29 = 9dbm (-21dbm)
30:10dbm (-20dbm) 20
Item
No.
Item Input Data Default