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 in noisy environments, Avaya Tier 4 engineers might recommend that you set the system parameter AUDIOENV.
AUDIOENV is an index into a table that impacts four internal variables:
Table 6: Internal Audio Variables
| Variable |
Description |
Possible Values |
| AGC_Dyn_Range |
AGC dynamic range. |
0 for a typical office environment (+/-9dB), 1 for +/-12dB, 2 for +/-15dB, and 3 for +/-18 AGC Dynamic range variation. |
| Exp_thresh_Hd |
The expansion threshold for the headset. |
The expansion threshold for the headset has a default value of 0 for a typical office environment, 1 for call center applications, and 2 for “other” audio environments. |
| Exp_thresh_Hs |
The expansion threshold for the handset. |
The expansion threshold for the handset has a default value of 0 for a typical office environment, 1 for call center applications, and 2 for “other” audio environments. |
| Tx_Gain |
Transmit gain. |
Transmit gain has a default value of 0 for normal transmit gain, 1 for +6dB of gain, and 2 for -6dB of gain. |
AUDIOENV is calculated as:
AUDIOENV= (27 * AGC_Dyn_Range) + (9 * Exp_thresh_Hd) + (3 * Exp_thresh_Hs) + Tx_Gain, which results in a range of 0 to 107.
Set AUDIOENV 0 is the nominal setting (0,0,0,0)
