Yealink SIP-T42G - Manual (Page 13)

Overview
3
Icons appearing on the LCD screen are described in the following table:
Icon Description
Network is unavailable
Registered successfully
Register failed
Registering
Hands-free speakerphone mode
Handset mode
Headset mode
Voice Mail
Auto Answer
Do Not Disturb
Call Hold
Call Mute
Ringer volume is 0
Keypad Lock
Alphanumeric input mode
Numeric input mode
Multi-lingual lowercase letters input mode
Multi-lingual uppercase letters input mode
Multi-lingual uppercase and lowercase letters
input mode
Call Forward/Forwarded Calls