Grandstream Networks HT814 Administration Manual page 16

https://arttel.ru/
Phone LED 1, 2, 3 and 4
https://arttel.ru/shop/voip-shlyuzy/grandstream-ht-814
The phone LEDs 1, 2, 3 and 4 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
HT814 Administration Guide
P a g e | 15