Akuvox R15P, User Manual

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noise until voice activity resumes. The insertion of
artificial noise gives the illusion of a constant
transmission stream, so that background 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
and speaker mode.