D-Link DVG-2101S Manuel D’Utilisation

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DVG-2101S User Manual 
 
Advanced 
 
 
 
 
 
 
30 
Codec 
The codec used for each call will be negotiated with the peer party before each 
session, and therefore many codecs will not be included in your default 
configuration. The default codec is G.729A, it occupies little bandwidth while 
maintaining good voice quality. 
 
If your upstream speed is only 64Kbps, using G.711_A codec is not 
recommended. It is better to have at least 256Kbps upstream if you would like 
to use G.711_A. 
 
 
 
Priority 
There are five priorities for you to configure the codec priority in 
the order you preferred. Priority 1 means the first priority and 
priority 5 means the last. 
Codec 
Select the codec type from the drop-down list. 
Packetization 
Time 
Select the length of the digital voice segment that each packet 
holds. The default is 20 millisecond packets. Selecting 10 
millisecond packets enhances the voice quality, as less 
information is lost due to packet loss, but doubles the load on 
the network traffic. 
DTMF 
Select the method of DTMF tone generation from the drop-
down list.