User's Manual
Grandstream Networks, Inc.  HT-702 User Manual  Page 6 of 32 
  Firmware Version 1.0.0.17  Last Updated: 02/2012 
FXS Ports (RJ-11) 
FXS ports: to be connected to analog phones / fax machines. 
There are five (5) LED buttons that help you manage the status of your HandyTone. 
Table 2: Basic Definitions of the HT702 LEDs Pattern 
LEDs  
POWER LED 
Indicates Power. Remains ON when power is connected 
Internet LED 
Indicates Access to Internet. Remains ON while there is Access 
Link/Activity LED 
Indicates if There is Activity on the Internet Port 
PHONE LEDs 
Indicate status of the respective FXS Ports-PHONE 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 HT702 LEDs Pattern 
Patten 
Number 
Condition  LED  LED Behavior 
LED-01 
Device has normal power  Power  ON 
LED-02 
Power Error: Power is removed from the device or power 
supply with improper voltage is plugged in 
Power  OFF 
LED-03 
Line X is registered normally to the sip providers network  
and is ready to make a call 
Phone  ON 
LED-04 
Voice mail waiting for Line X  Phone  1sec ON / 3sec OFF 
LED-05 
Device has normal WAN connection and has obtained IP 
address 
Internet  ON 
LED-06 
Internet link error: Device is powered up and ready to 
connect to the Internet but the WAN/INTERNET port is 
down 
Internet  OFF 
LED-07 
Internet DHCP Error: Device is properly connected but it is 
unable to retrieve an IP address from the device it is 
connected to 
Internet  0.25sec ON/ 0.25sec OFF
LED-08 
Line Registration failed: Device is properly setup, can 
connect to provider's network, but cannot register to 
provider's SIP proxy (no 200 OK) 
Phone  OFF 
LED-09 
Device is connected (has physical data link) but there are 
incorrect network settings typically associated with PPPoE 
connection failure 
Internet  0.25sec ON/ 0.25sec OFF
LED-10 
Hazardous potential test failed: Hazardous AC or DC 
voltage is present on the tip and ring or both signals of 
phone line X 
Phone  0.25sec ON/ 0.25sec OFF
LED-11 
Foreign electro Motive Force (EMF) Test fail. Foreign 
voltage is present on the tip, ring or both signals of phone 
line. Device has detected additional external Phone 
voltage on the FXS phone line. 
Phone  0.25sec ON/ 0.25sec OFF
LED-12 
Resistive fault test failed. Either tip or ring is shorted to 
ground or they are shorted to each other. 
Phone  0.25sec ON/ 0.25sec OFF
LED-13 
Receiver off hook test fail. One or more phones are off  Phone  0.25sec ON/ 0.25sec OFF










