User Guide

Yealink EXP20 User Guide
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Directory ................................................................................................................................................................... 42
Using the Yealink EXP20 LCD Expansion Module ..................... 44
Using the Line Key ................................................................................................................................................ 44
Adjusting the Contrast ........................................................................................................................................ 45
Adjusting the Backlight ...................................................................................................................................... 46
Using the Busy Lamp Field ................................................................................................................................ 47
Resetting the Yealink EXP20 LCD Expansion Module ............................................................................ 47
Troubleshooting ........................................................................... 50