Polycom IP 320 Administrator's Manual page 248
Polycom soundpoint ip/soundstation ip/ vvx family
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Administrator's Guide for the SoundPoint IP / SoundStation IP / VVX Family
Attribute
video.profile.H263.jitterBufferMax
video.profile.H263.jitterBufferMin
video.profile.H263.jitterBufferShrink
video.profile.H263.CifMpi
video.profile.H263.QcifMpi
video.profile.H263.SqcifMpi
video.profile.H2631998.jitterBufferMax
A - 68
Permitted
Values
Interpretation
(video.profil
The largest jitter buffer depth to be supported
(in milliseconds). Jitter above this size will
e.H263.jitter
BufferMin +
always cause lost packets. This parameter
500ms) to
should be set to the smallest possible value
2500ms,
that will support the expected network jitter.
default 2000ms
33ms to
The smallest jitter buffer depth (in milliseconds)
1000ms,
that must be achieved before play out begins
default 150ms
for the first time. Once this depth has been
achieved initially, the depth may fall below this
point and play out will still continue. This
parameter should be set to the smallest
possible value which is at least two packet
payloads, and larger than the expected short
term average jitter.
33ms to
The absolute minimum duration time (in
1000ms,
milliseconds) of RTP packet Rx with no packet
default 70ms
loss between jitter buffer size shrinks. Use
smaller values (33 ms) to minimize the delay
on known good networks. Use larger values
(1000ms) to minimize packet loss on networks
with large jitter (3000 ms).
1 (default) to 32
This value is H263/90000 format parameter
CIF used to signal Polycom VVX 1500
receiving capability in SDP.
This value also controls the TX frame size. If
set to 1, CIF is used (provided the far end
supports CIF=1); otherwise QCIF is used.
1 (default) to 32
This value is H263/90000 format parameter
QCIF used to signal Polycom VVX 1500
receiving capability in the SDP.
1 (default) to 32
This value is H263/90000 format parameter
SQCIF used to signal Polycom VVX 1500
receiving capability in the SDP.
The largest jitter buffer depth to be supported
(video.profil
(in milliseconds). Jitter above this size will
e.H2631998.ji
always cause lost packets. This parameter
tterBufferMin
+ 500ms) to
should be set to the smallest possible value
2500ms,
that will support the expected network jitter.
default 2000ms
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