The Phone LED off is normal behavior.
It will not light until a trunk is defined and registered on SP1.
Do you get dial tone when you take the phone off-hook?
To use the echo test you must be connected to the OBiTalk server.
Login to the Obi100.
You should get a status screen.
At the bottom of the page is OBiTalk server status.
It should be "Normal(user mode)"
The ***1 should always work.
Try resetting the OBi100.
On the bottom of the OBi100 there is an access hole.
It's a little larger than the vent holes.
Use a paper clip to press the reset button and hold until the OBi reboots.
When it reboots the power LED will turn red.
Is your phone defective?
Do you have another phone to try on the OBi100.
Thank you for the reply
I did reset the device multiple times, using both web interface, and pressing the hole using paperclip. No success
The status does say "Normal (User Mode)". I tried two different phones with no success.