Program 84 : Hardware Setup for VoIPDB
84-24 : DT800/DT700 Multiline CODEC Basic Information
Setup
Level:
IN
Description
Use Program 84-24 : DT800/DT700 Multiline CODEC Basic Information Setup to set the codec of
each type of DT800/DT700 Multiline Telephone.
Input Data
Type 1 = Type 1
2 = Type 2
3 = T
ype 3
4 = Type 4
5 = Type 5
Item
No.
Item Input Data Description Default
01 Number of G.711 Au-
dio Frame
1 = 10 ms
2 = 20 ms
3 = 30 ms
4 = 40 ms
Maximum number of G711 Audio Frames.
When the voice is encoded using the PCM
(Pulse Code Modulation) method, a unit is
a frame of 10ms.
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.
2
02 G.711 Silence Detec-
tion (VAD) Mode
0 = Disable
1 = Enable
Select whether to compress silence with
G.711. When there is silence, the R
TP
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
03 G.711 Type 0 = A-law
1 = μ-law
Set the type of G.711. 1
04 G.711 Jitter Buffer -
Minimum
0 ~ 300 ms (for VoIPDB
mode)
10 ~ 300 ms* (for Built-In
VoIP mode)
Set the minimum value of the G.711 Jitter
Buffer.
20
05 G.711 Jitter Buffer -
Average
Set the average value of the G.711 Jitter
Buffer.
40
06 G.711 Jitter Buffer -
Maximum
Set the maximum value of the G.711 Jitter
Buffer.
80
07 G.729 Audio Frame 1 ~ 4
(1 = 10 ms, 2 = 20 ms,
etc.)
Maximum number of G.729 Audio Frames.
G.729 assumes the audio signal made by
a specimen by 8 kHz and the frame of 10
ms is assumed to be a unit to 8 kbps 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.
2
SL2100 ISSUE 2.0
2-552 Program 84 : Hardware Setup for VoIPDB
Program
84
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