Configuration Parameters
Polycom, Inc. 82
video.profile.H261.jitterBufferMin
1
33ms to 1000ms 150ms
The smallest jitter buffer depth (in milliseconds) that must be achieved before play out begins for the first time. Once
this depth has been achieved initially, the depth may fall below this point and play out still continues. 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.
video.profile.H261.jitterBufferShrink
1
33ms to 1000ms 70ms
The absolute minimum duration time (in milliseconds) of RTP packet Rx with no packet 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).
video.profile.H261.payloadType
1
0 to 127 31
RTP payload format type for H261 MIME type.
video.profile.H261.QcifMpi
1
1 to 32 1
Specify the frame rate divider that the system uses when negotiating Quarter CIF resolution for a video call. You can
enter a value between 0-4. To disable, enter ‘0’. The default frame rate divider is ‘1’.
video.profile.H263.CifMpi
1
1 to 32 1
Specify the frame rate divider that the system uses when negotiating CIF resolution for a video call. You can enter a
value between 0-32. To disable, enter ‘0’. The default frame rate divider is ‘1’.
video.profile.H263.jitterBufferMax
1
(video.profile.H263.jitter
BufferMin + 500ms) to
2500ms
2000ms
The largest jitter buffer depth to be supported (in milliseconds). Jitter above this size always causes lost packets. This
parameter should be set to the smallest possible value that supports the expected network jitter.
video.profile.H263.jitterBufferMin
1
33ms to 1000ms 150ms
The smallest jitter buffer depth (in milliseconds) that must be achieved before play out begins for the first time. Once
this depth has been achieved initially, the depth may fall below this point and play out still continues. 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.
video.profile.H263.jitterBufferShrink
1
33ms to 1000ms 70ms
The absolute minimum duration time (in milliseconds) of RTP packet Rx with no packet 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).
video.profile.H263.payloadType
1
0 to 127 34
RTP payload format type for H263 MIME type.
video.profile.H263.QcifMpi
1
1 to 32 1
Specify the frame rate divider that the system uses when negotiating Quarter CIF resolution for a video call. You can
enter a value between 0-32. To disable, enter ‘0’. The default frame rate divider is ‘1’.
Video Profile Parameters (continued)
Parameter Permitted Values Default
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