Aastra Telecom AastraLink Pro 160 - Manual (Page 127)

Configuring System Settings
41-001190-02 Rev. 01, Rel. 1.2 4-17
Configuring AastraLink Pro 160 System and Network Parameters
Configuring FXO Tuning Settings
The FXO Tuning tab provides an Auto-Tuning button, that when clicked, runs a
Tuning Wizard that automatically adjusts the audio on the AastraLink Pro. The
FXO Tuning tab also provides parameters you can set to manually adjust
voicepath gain.
Auto-tuning helps to maximize the audio quality of calls routed via the FXO
telephone line interfaces. If the resulting gain or echo performance from the FXO
Auto-Tuning Wizard is not deemed correct, the values can be overridden by
manually setting the parameters on this FXO Tuning page.
Note: Generally after initial FXO tuning, it should not be necessary to modify the
tuning parameters, unless a specific audio-quality issue exists. Any values
assigned to these FXO tuning parameters are erased if you rerun the FXO
Auto-Tuning Wizard. DO NOT rely on manual settings made on this page
for normal system use.
FXO tuning is recommended for all systems at installation time, in order to tune
the AastraLink to match the telephone line, minimizing echo and maximizing the
audio quality.
Note: After upgrading your AastraLink Pro and logging in for the first time after
the upgrade, the Administrator Web UI login prompts you to optionally run
the Tuning Wizard before using the upgraded AastraLink software. This
allows the audio on the AastraLink to be adjusted before using the phones
in the AastraLink network. Aastra recommends you run the Tuning Wizard
before using the upgraded software.
Tuning is performed using the first available (connected/idle) FXO line, and the
resulting line profile is applied for all 6 FXO ports on the AastraLink. All the
FXO lines must have the same/similar line profile; line interface variations
between FXO ports such as having different service providers on different FXO
lines are not supported.
You can start the Automatic Tuning Wizard, if required, using the Web UI at the
location, Configuration->System->FXO Tuning.