Grandstream Networks GXV3275 User Manual page 46

Mute is enabled.
Silent mode is enabled. When it's on, the incoming call/message
won't produce ring tone/notification tone from phone's speaker.
SD Card is inserted.
SD Card space full.
USB flash drive is inserted.
Downloading files via Internet connection.
Updating applications.
Calendar has event scheduled.
Unread voicemail to be retrieved.
Unread Email to be retrieved.
FTP server is running.
Incoming call from blacklist contact.
Camera is disabled.
Contact storage is full.
HDMI cable is connected to display device.
New SMS message to be retrieved.
SMS Message sent failure.
The phone is powered up using PoE.
Call forward is set up for SIP account 1.
Call forward is set up for SIP account 2.
Firmware Version 1.0.3.6 GXV3275 User Guide Page 44 of 167