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Grandstream Networks, Inc. HT503 User Manual Page 6 of 38
Firmware 1.0.4.2 Last Updated: 06/2011
TABLE 1: DEFINITIONS OF THE HT503 CONNECTORS
12VDC, 0.5A
Power adapter connection
LAN Port (RJ-45)
Connect the LAN port with an Ethernet cable to your PC.
WAN Port (RJ-45)
Connect the WAN port to the internal LAN network or router.
PHONE (RJ-11)
FXS port to be connected to analog phones / fax machines.
LINE (RJ-11)
FXO port should be connected to the PSTN line
TABLE 2: HT503 LED DEFINITIONS
LEDs
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
Analog Phone
WAN
LAN
FXS FXO
PSTN
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