PLANET VIP-1010PT - Manual (Page 57)

High Definition PoE IP Phone (1-Line)
VIP-1010PT
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sound is consistent throughout the call and the listener
does not think the line has released.
Jitter Buffer Jitter buffer is a shared data area where voice packets can
be collected, stored, and sent to the voice processor in
even intervals. Jitter is a term indicating variations in
packet arrival time, which can occur because of network
congestion, timing drift or route changes. The jitter
buffer, located at the receiving end of the voice
connection, intentionally delays the arriving packets so
that the end user experiences a clear connection with
very little sound distortion.
IP phones support two types of jitter buffers: fixed and
adaptive.
Fixed: Add the fixed delay to voice packets. You can
configure the delay time for the static jitter buffer on IP
phones.
Adaptive: Capable of adapting the changes in the
network's delay. The range of the delay time for the
dynamic jitter buffer added to packets can be also
configured on IP phones.
Mic Volume To configure Microphone volume for headset, handset or
speaker mode.