Voice Parameters

The parameters listed in the following tables configure phone audio.

Table 1. Voice Parameters

Template

Parameter

Permitted Values

Change Causes

Restart or Reboot

site.cfg

voice.rxPacketFilter

Define a high-pass filter to improve sound intelligibility when the phone receives narrow band signals. Narrow band signals occur when a narrow band codec is in use, such as G.711mu, G.711A, G.729AB, iLBC, and some Opus and SILK variants.

0 (default) - Pass through.

1 - 300 Hz high-pass.

2 - 300 Hz high-pass with pre-emphasis. Use this value with G.729.

No

site.cfg

voice.txPacketDelay

Null (default)

normal, Null - Audio parameters are not changed.

low - If there are no precedence conflicts, the following changes are made:

voice.codecPref.G722="1" voice.codecPref.G711Mu="2" voice.codecPref.G711A="3" voice.codecPref.<OtherCodecs>="" voice.audioProfile.G722.payloadSize="10" voice.audioProfile.G711Mu.payloadSize= "10" voice.audioProfile.G711A.payloadSize= "10" voice.aec.hs.enable="0" voice.ns.hs.enable="0"

Yes

site.cfg

voice.txPacketFilter

Null (default)

0 - Tx filtering is not performed.

1 - Enables Narrowband Tx high pass filter.

Yes