Grandstream Networks DP750 User Manual page 22

Signal good
Signal status
Signal very good
Microphone MUTE Status
OFF - Not muted
ON – Muted
Speaker Status
OFF - Speaker is inactivated
ON - Speaker is activated
Ringtone Status
OFF - Ringtone off (Silent mode)
ON - Ringtone on
Keypad Lock Status
OFF - Keypad unlock
ON - Keypad locked
External Incoming Call
External Outgoing Call
Internal Incoming Call
Internal Outgoing Call
Missed Call Icon
Incoming Call Icon
Outgoing Call Icon
Contacts
Call History
Voice Mail
Settings
Call Settings
Tools
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DP750/DP720 User Guide