You are correct, i did not set this up.
The internet cable is connected to the Arris.
The Netgear58 router is connected via ethernet cable directly to the Arris.
The Obi200 is connected via ethernet cable directly to the Arris.
There is a phone cable connecting the Obi200 to a phone.
My computer and phone are wifi connected via the Netgear router.
You are not good at following instructions. I said "precise details". You should have told me what jack on the Arris is connected to what jack on the Netgear.
Try this.
1. Unplug the Obi's power lead.
2. Unplug the OBi's ethernet cable from the Arris and instead plug it into one of the LAN jacks on the Netgear.
3. Plug the Obi's power lead in.
4. Wait for the OBi's power LED to become steady green.
5. Dial **9 222 222 222. Report back what you hear.