Polycom SoundPoint IP 601 Administrator's Manual page 101

Administrator Guide - SoundPoint
Attribute
voice.codecPref.IP_300.G711Mu
voice.codecPref.IP_300.G711A
voice.codecPref.IP_300.G729AB
voice.codecPref.IP_4000.G711Mu
voice.codecPref.IP_4000.G711A
voice.codecPref.IP_4000.G729AB
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.
Attribute
voice.audioProfile.x.payloadSize
voice.audioProfile.x.jitterBufferMin
® ®
IP / SoundStation IP
Permitted
Values
Null, 1-3
Null, 1-3
Permitted
Values
10, 20, 30,
...80
40, 50, 60, ...
(multiple of
10)
Copyright © 2005 Polycom, Inc.
Default Interpretation
1 Specifies the codec preferences for
®
SoundPoint IP 300 and 301 plat-
2
forms.
3
1 = highest
3 = lowest
Null = do not use
Give each codec a unique priority,
this will dictate the order used in
SDP negotiations.
1 Specifies the codec preferences for
the SoundStation
2
Interpretation as above.
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.
Interpretation
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.
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.
Optimization
®
IP 4000 platform.
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