Table 2: Ht503 Led Definitions; Table 3: Advanced Definitions Of The Ht50X Leds Patterns - Grandstream Networks HT503 User Manual

POWER LED
WAN LED
LAN LED
PHONE/ LINE LED
All LEDs display green when ON
Note:
LED-01 Device has normal power
LED-02 Power Error: Power is removed from the device or
power supply with improper voltage is plugged in
LED-03 Line X is registered normally to the sip providers
network and is ready to make a call
Voice mail waiting for Line X
LED-04
LED-05 Device has normal WAN connection and has obtained
IP address
LED-06 Internet link error: Device is powered up and ready to
connect to the Internet but the WAN/INTERNET port
is down
LED-07 Internet DHCP Error: Device is properly connected

Table 2: HT503 LED Definitions

Indicates Power. Remains ON when power is connected
Indicates LAN (or WAN) port activity
Indicates PC (or LAN) port activity
Indicates the status of the FXS and FXO ports on the back panel.
Unregistered – OFF
Registered and Available – ON (Solid Green)
Off-Hook / Busy – Blinking every second
Slow blinking FXS LEDs indicates voicemail

Table 3: Advanced definitions of the HT50x LEDs patterns

HT503 User Manual
Power ON
Power OFF
Phone ON
Phone 1sec ON / 3sec OFF
Internet ON
Internet OFF
Internet 250ms ON/ 250ms
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