Grandstream Networks HT502 User Manual page 15

Internet DHCP Error: Device is properly connected
LED-07
but it is unable to retrieve an IP address from the
device it is connected to
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)
LED-09 Device is connected (has physical data link) but there
are incorrect network settings typically associated
with PPPoE connection failure
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
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.
LED-12 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
LED-13
hook on phone line during test.
LED-14 REN test failed – high REN detected. Too many
parallel phones connected to phone line X
Line is active
LED-15
HT502 User Manual
250ms ON/ 250ms
Internet
OFF
2x1000ms ON/OFF
Phone +
3sec OFF
250ms ON/ 250ms
Internet
OFF
1x250ms ON/OFF
Phone +
3sec OFF
2x250ms ON/OFF
Phone +
3sec OFF
3x250ms ON/OFF
Phone +
3sec OFF
4x250ms ON/OFF
Phone +
3sec OFF
5x250ms ON/OFF
Phone +
3sec OFF
Phone 500ms ON/OFF
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