Automatic Line Balancing

Description

Automatic Line Balancing (ALB) automatically performs a series of tests on analog lines and selects a preset profile that optimizes the audio quality and Handsfree performance of the line. There are 19 available profiles (0-18) from which the system can choose after testing the line. If Automatic Line Balancing is enabled in programming, the optimization test reoccurs:

When the system is powered up or it is reset.
A COIU card is installed or reset and the lines associated with the card have Automatic Line Balancing enabled (0).
A line returns to service after it has been out of service.
If you enable the option in programming. The test runs the next time the line goes idle.

You can also run the Automatic Line Balancing optimization test manually. See How to Manually Run the ALB Test for more.

Conditions and Defaults

Conditions

None.

Default Setting

Automatic Line Balancing disabled.

Release Notes (System)

Automatic Line Balancing Introduced

[3.01] Automatic Line Balancing is introduced in software version 3.01.

Reference: None

Line Balancing After System Reset Improved

[3.02] The performance of the Automatic Line Balancing that occurs after a system reset is improved in software version 3.02.

Reference: None

Other Related Features

Features

Central Office Calls, Answering and Central Office Calls, Placing
- Automatic Line Balancing helps achieve the best possible call quality when using analog lines.
Handsfree and Handsfree Answerback
- When using Handsfree on an outside analog line, Automatic Line Balancing can dramatically improve the quality of Handsfree calls.

IntraMail Features

None.