Grandstream HT503 User Manual - Manual (Page 13)

FIRMWARE VERSION 1.0.14.1 HT503 USER MANUAL Page 11 of 64
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TABLE 2: HT503 LED DEFINITIONS
POWER LED Indicates Power. Remains ON when power is connected
WAN LED Indicates LAN (or WAN) port activity
LAN LED Indicates PC (or LAN) port activity
PHONE/ LINE LED Indicates the status of the FXS and FXO ports on the back panel.
Busy – ON (Solid Green) Available – OFF
Slow blinking FXS LEDs indicates voicemail for that port.
Note: Slow blinking of POWER, WAN, and LAN LEDs together indicate firmware upgrade/provisioning state.
FIGURE 2: INTERCONNECTION DIAGRAM OF THE HT503
Internet ADSL/Cable
Modem Ethernet
Fax
Cordless
Phone
Analog Phone
WAN
LAN
FXS FXO
PSTN
Cloud