Grandstream Networks, Inc. HT-70X User Manual Page 7 of 35
Firmware Version 1.0.0.18 Last Updated: 03/2012
Table 3: Advanced Definitions of the HT70X LEDs Pattern
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 but it is
unable to retrieve an IP address from the device it is
connected to
Line Registration failed: Device is properly setup, can
connect to provider's network, but cannot register to
provider's SIP proxy (no 200 OK)
Device is connected (has physical data link) but there are
incorrect network settings typically associated with PPPoE
connection failure
Hazardous potential test failed: Hazardous AC or DC
voltage is present on the tip and ring or both signals of
phone line X
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.
Resistive fault test failed. Either tip or ring is shorted to
ground or they are shorted to each other.
Receiver off hook test fail. One or more phones are off
hook on phone line during test.
REN test failed – high REN detected. Too many parallel
phones connected to phone line X
During Provisioning Stage*
During Firmware Recovery Stage*
*Note: In Provisioning and Firmware Recovery Stage, the power LED is Steady ON.
