Acoustic Echo Cancellation Parameters

The following table includes the parameters you can use to set up Acoustic Echo Cancellation.

Table 1. Acoustic Echo Cancel (AEC) Parameters

Template

Parameter

Permitted Values

Change Causes

Restart or Reboot

site.cfg

voice.aec.hf.enable

1 (default)—Enables the AEC function for handsfree options.

0—Disables the AEC function for handsfree options.

Polycom does not recommend disabling this parameter.

No

site.cfg

voice.aec.hs.enable

0—Disables the AEC function for the handset.

1 (default)—Enables the AEC function for the handset.

No

debug.cfg

voice.aes.hf.duplexBalance

0 - Max Echo Control (default) - Balances the Acoustic Echo Suppression to maximize the echo control, allowing the near-end and far-end users to speak simultaneously with minimal full duplex in handsfree mode.

1 - Max Full Duplex: Balances the Acoustic Echo Suppression to maximize full duplex. This makes the phone handsfree more susceptible to echo during continuous double-talk or when moving the phone or objects near the phone.

No