Grandstream Networks HandyTone-488 User Manual page 17

HandyTone-488 User Manual
RED LED always indicates not abnormal status
DHCP Failed or WAN No Cable
HandyTone-488 fails to register
Firmware Upgrading
Device Malfunctions
GREEN LED mostly indicates normal working status
Message Waiting Indication
RINGING
RINGING INTERVAL
In Conversation
Button flashes every 2 seconds (if DHCP is
configured)
Button flashes every 2 seconds (if SIP server is
configured)
Button flashes every 2 seconds
Red light steady on
Button flashes every 2 seconds
Button flashes at 1/10 second
Button flashes every second
Green light steady on
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Grandstream Networks, Inc.