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Administrator Guide – AzaCall200 VOIP Multi-Protocol Gateway
5.14.5. CODEC
This screen allows a user to set CODEC configurations including Codec Rate, Preferred Codec,
and VAD. After making the setting changes, click
OK
then
Save Configuration
and
Reboot
for
the new settings to take effect.
Figure 37
VOIP Codec Configuration Window
Item
Description
CODEC Rate
“CODEC rate” specifies the packetization time (in milliseconds). This
value is from 10 to 30
Preferred CODEC
Specify the preferred method of voice compression.
z
G..711A and G..711U: 40Kbps
z
G.729A: 24Kbps
z
G.723.1: 12Kbps
VAD
Voice Activity Detection feature.
z
Enable: Send packets only when the user is speaking. This will save
the bandwidth but cause some time delay.
z
Disabled: Send packets whether the user is speaking or not. This
will improve the voice quality but increase traffic load.
