Yealink SIP-T4X Administration Manual page 31

Administrator's Guide for SIP-T4X IP Phones
IP phones can accept two sources of configuration data:
Downloaded from configuration files

Changed on the phone user interface or the web user interface

The latest value configured on the IP phone takes effect finally.
Icons associated with different features may appear on the LCD screen. The following
table provides a description for each icon on SIP-T4X IP phone models.
SIP-T46G
16
SIP-T42G/T41P
Network is unavailable
Registered successfully
Register failed
Registering
Hands-free speakerphone mode
Handset mode
Headset mode
Voice Mail
/ Text Message
Auto Answer
Do Not Disturb
Call Forward
Call Hold
Call Mute
Ringer volume is 0
Description