Technical support

Fault Finding Guide

Work through a few focused questions to identify the likely cause and find the relevant technical guidance.

Choose the closest answerVolume too high

500 Series Audio All phones High pitch noise on speech Volume too high

Recommended guidance500 Series

What to check

On the back of the door panel there are separate volume controls for Speaker and Microphone.

Reduce volume on either or both, usual setting about 1/3rd up.

ID13533