Polycom Video Game Sound System Version 2.0.3B User Manual

Administrator’s Guide - SoundPoint

®

 IP / SoundStation

®

 IP

Addendum

6 

Copyright © 2006 Polycom, Inc.

The SoundPoint IP 650 supports the G.722 audio codec.

Changes can be found in the following parameters in the sip.cfg configuration file:

•   Codec Preferences <codecPref/>

•   Audio Profiles <audioProfile/>

voice.codecPref.IP_650.G711M
u

Null, 1-3

2

Specifies the codec preferences 
for the SoundPoint IP 650 
platform.
1 = highest

 

3 = lowest

 

Null = do not use

voice.codecPref.IP_650.G711A

3

voice.codecPref.IP_650.G729A
B

4

voice.codecPref.IP_650.G722

1

voice.audioProfile.G722.pay-
loadSize

10, 20, 
30, ... 80

20

Preferred Tx payload size in mil-
liseconds to be provided in SDP 
offers and used in the absence of 
ptime negotiations. This is also 
the range of supported Rx pay-
load sizes.

voice.audioProfile.G722.jitter-
BufferMin

20, 40, 
50, 60, ... 
(multiple 
of 10)

40

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 will still continue. 
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.