Polycom Version 1.4.x 17 - Manual (Page 87)

Administrator Guide - SoundPoint
®
IP / SoundStation
®
IP Optimization
Copyright © 2004 Polycom, Inc 79
4.6.1.6.1.1 Codec Preferences
4.6.1.6.1.2 Codec Profiles
The following profile attributes can be adjusted for each of the three supported codecs.
In the table, x=G711Mu, G711A, or G729AB.
Attribute
Permitted
Values
Default Interpretation
voice.codecPref.G711Mu Null, 1-3 1 Specifies the codec preferences for
SoundPoint
®
IP platforms.
1=highest
3=lowest
Null=do not use
Give each codec a unique priority,
this will dictate the order used in
SDP negotiations.
Note: If less than two codecs are
specified, the phone will automati-
cally use G711Mu and G711A with
default parameters.
voice.codecPref.G711A 2
voice.codecPref.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.