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
Note: All LEDs display green when ON
Table 3: Advanced definitions of the HT50x LEDs patterns
Power Error: Power is removed from the device or
power supply with improper voltage is plugged in
Line X is registered normally to the sip providers
network and is ready to make a call
Voice mail waiting for Line X
Device has normal WAN connection and has obtained
IP address
Internet link error: Device is powered up and ready to
connect to the Internet but the WAN/INTERNET port
is down
Internet DHCP Error: Device is properly connected