# Line Measure Logs

A maintenance log is generated for every Line Measure Tool test. Below is an example of a typical test log:

The first line of the log identifies the

- Type of test

- Result of the test: pass or fail

- Date and time of test

For Line Quality Tests, the following information is provided:

Data | Description
ERL | Minimum Echo Return Loss ( ERL) measured on the line
Impedance | Recommended impedance setting for optimal voice quality
Comment A | Identifies anomalies detected when optimizing impedance. Typically not present.
Level | Measured loss on the line
Length | Recommended length setting for optimal voice quality
Comment B | Identifies anomalies detected when optimizing length
Color | An assessment of the overall quality of the line (GREEN, YELLOW, RED). GREEN indicates low possibility of echo on the line YELLOW indicates possibility of echo is moderate RED indicates high possibility of echo If a line is assessed a RED rating, contact the local CO and request a line change.

Related Topics

- Measuring LS Trunk Line Settings