Internal Audio Parameters - Avaya 4600 Series Administrator's Manual

Server Administration

Internal Audio Parameters

The AUDIOENV variable provides control of some internal audio parameters in the 4600 Series
IP Telephones. Avaya does not recommend that customers set these values. In certain
situations, particularly noisy environments, Avaya SSE may recommend a change in the
AUDIOENV setting to reduce/eliminate the effects environmental noise can have during phone
use. This variable applies to R2.4 and later software releases, except R2.5.
AUDIOENV is an index into a table that impacts four internal variables:
Table 6: Internal Audio Variables
Variable
AGC_Dyn_Range
NR_thresh_Hd
NR_thresh_Hs
HD_Tx_Gain
AUDIOENV= a range of 0 to 107 for pre-2.8 releases., a range of 0 to 191 for Release 2.8, and
a range of 0 to 299 beginning with Release 2.8.3.
Set AUDIOENV 0 is the nominal setting (0,0,0,0).
Please see Audio Quality Tuning for IP Telephones, Issue 2 on support.avaya.com.
90 4600 Series IP Telephone LAN Administrator Guide
Description
AGC dynamic range.
The noise reduction
threshold for the
headset.
The noise reduction
threshold for the
handset.
Headset transmit
gain.
Possible Values
0 for a typical office environment (+/-9dB), 1
for +/-12dB, 2 for +/-15dB, and 3 for +/-18
AGC Dynamic range variation.
The noise reduction threshold for the headset
has a default value of 0 for a typical office
environment, 1 for call center applications, 2
and 4 for increasingly noisy audio
environments, and 3 where noise reduction is
disabled.
The noise reduction threshold for the handset
has a default value of 0 for a typical office
environment, 1 for call center applications, 2
and 4 for increasingly noisy audio
environments, and 3 where noise reduction is
disabled.
Headset transmit gain has a default value of
0 for normal transmit gain, 1 for +6dB of gain,
and 2 for -6dB of gain.