Is this a new install or was it working then stopped?
Are you checking the OBi202 System Status to see if you are registered?
When someone calls does the Phone Port LED flash?
If it does there is something wrong with your phone or cord.
Using OBi Expert, check the following parameter on the OBI202.
You need to uncheck both boxes to the right of the parameter value.
Voice Services -> SPx Service -> X_InboundCallRoute
The default is ph
If it's not "ph" then save a copy of the current value, so you can restore it.
Now change it to ph
Does the phone ring?
Do you have a Windows PC?
If yes, install the PhonerLite softphone.
http://www.phoner.de/PhonerLiteSetup.exeWhen you start Phonerlite I think a wizard will popup because no accounts are defined.
Proxy: 192.168.1.110:5060 (IP addr & Port of SP1 on the OBi202)
Click right arrow.
User Name: OBi202
Click right arrow.
Change Profile Name: OBi202
Click check mark
Uncheck box next to Register
Save
Dial 0 and click the green phone symbol.
Does the Phone ring?
Click red phone symbol to hang up.
Edit:
Do calls ring 3-4 times before going to VM or do they go directly to VM?