Polycom IP 320 Administrator's Manual page 235

Attribute
voice.aec.hf.highFreqCutOff
voice.aec.hf.erlTab_0_300
voice.aec.hf.erlTab_300_600
voice.aec.hf.erlTab_600_1500
voice.aec.hf.erlTab_1500_3500
voice.aec.hf.erlTab_3500_7000
Attribute
voice.aes.hs.enable
voice.aes.hs.duplexBalance
voice.aes.hd.enable
voice.aes.hd.duplexBalance
voice.aes.hf.enable
voice.aes.hf.duplexBalance.0
voice.aes.hf.duplexBalance.1
voice.aes.hf.duplexBalance.2
voice.aes.hf.duplexBalance.3
voice.aes.hf.duplexBalance.4
voice.aes.hf.duplexBalance.5
voice.aes.hf.duplexBalance.6
Acoustic Echo Suppression <aes/>
Acoustic Echo Suppression (AES) provides non-linear processing of the
microphone signal to remove any residual echo remaining after linear AEC
processing. Because AES depends on AEC, AES should only be enabled when
AEC is also enabled. Normally, AES should be used whenever AEC is used for
handsfree or handset and both are enabled by default for those terminations
These settings control the performance of the speakerphone acoustic echo
suppressor.
Polycom recommends that you do not change these values.
Configuration Files
Default
7000
-6
-6
-6
-6
-6
Default
1
7
0
0
1
7
7
6
6
5
4
4
A - 55