Administrator Guide - SoundPoint
®
IP / SoundStation
®
IP
Optimization
Copyright © 2005 Polycom, Inc.
93
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.
1 = highest
3 = lowest
Null = do not use
Give each codec a unique priority,
this will dictate the order used in
SDP negotiations.
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
40, 50, 60, ...
(multiple 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.
Attribute
Permitted
Values
Default
Interpretation