Filter
Top Products
Administrator’s Guide - SoundPoint
®
IP / SoundStation
®
IP Optimization
Copyright © 2006 Polycom, Inc. 109
4.6.1.8.1.2 Codec Profiles <profiles/>
The following profile attributes can be adjusted for each of the three supported codecs.
In the table, x=G711Mu, G711A, or G729AB.
voice.codecPref.IP_300.G711Mu Null, 1-3 1 Specifies the codec preferences for
SoundPoint
®
IP 300 and 301 plat-
forms. Interpretation as above.
voice.codecPref.IP_300.G711A 2
voice.codecPref.IP_300.G729AB 3
voice.codecPref.IP_4000.G711Mu Null, 1-3 1 Specifies the codec preferences for
the SoundStation
®
IP 4000 platform.
Interpretation as above.
voice.codecPref.IP_4000.G711A 2
voice.codecPref.IP_4000.G729AB Null Not supported by default so that
G.711Mu and G.711A local confer-
ences can be supported. This restric-
tion will be removed in a future
release.
Attribute
Permitted
Values
Interpretation
voice.audioProfile.x.payloadSize 10, 20, 30,
...80
Preferred Tx payload size in millisec-
onds to be provided in SDP offers and
used in the absence of ptime negotia-
tions. This is also the range of supported
Rx payload sizes.
voice.audioProfile.x.jitterBufferMin 20, 40, 50,
60, ... (multi-
ple of 10)
The smallest jitter buffer depth (in milli-
seconds) 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 will still continue. This parameter
should be set to the smallest possible
value which is at least two packet pay-
loads, and larger than the expected short
term average jitter. The IP4000 values
are the same as the IP30x values.
voice.audioProfile.x.jitterBufferShrink 10, 20, 30, ...
(multiple of
10)
The absolute minimum duration time (in
milliseconds) of RTP packet Rx with no
packet loss between jitter buffer size
shrinks. Use smaller values (1000 ms) to
minimize the delay on known good net-
works. Use larger values to minimize
packet loss on networks with large jitter
(3000 ms).
Attribute
Permitted
Values
Default Interpretation