Grandstream Networks HT818 User Manual page 18

Phone LED 1- 8 The phone LEDs indicate status of the respective FXS port-phone on the
back panel
• OFF - Unregistered
• ON (Solid Blue) - Registered and Available
• Blinking every 500 ms - Off-Hook / Busy
• Slow blinking - FXS LEDs indicates voicemail
HT818 User Guide
Version 1.0.10.6
P a g e |
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