PLANET VIP-192 - Manual (Page 64)

Figure 106. NAT keepalive time setting
Field Description
Always send keep
alive packet
Enable or disable to keep the channel which is created for
SIP signaling alive.
Keep Alive time
The time interval that the IP phone always sends the
keepalive packet in order to ensure NAT works properly.
Table 20. NAT keepalive time description
Voice Setting
Figure 107. Voice setting
Field Description
Codec
Voice Compression Algorithm priority settings. Select from the
most used codec to the least used codec.
RTP Packet Length
The payload size for each RTP packet.
VAD
Support VAD for silence suppression. When Enable is selected, it
also supports SID frame for CNG.
DTMF Method
Select the method to generate DTMF. Out Band DTMF is based
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