For all those that want to do this, you don't need a router/ repeater etc. I just set up my obi200 on optimum WiFi with just an obi200 + obiwifi. See below for instructions.
Go to a location where you can connect your obi via cable to the router and via WiFi.
Set up the obi and connect via both the router and wifi.
You need to obtain the OBIWiFi MAC address, (not the obi200 Mac id) Here are the steps where it can be found:
***NOTE*** Be sure to have the Ethernet connection connected to your Router as well as the OBIWIFI USB device connected to the OBI USB Port prior to continuing. ***NOTE***
After running the normal setup *firmware update check (***6) etc..
At OBITALK.COM Sign in with your credentials - If you do not have a registered device - reg it on their site. Once in the OBITAlk.com site located the section "My OBi Endpoints" and select the device that you are configuring. Scroll down on the bottom of the page and locate "OBi Expert Configuration" - You will be prompted to continue and blah blah blah changes may cause device to not function if you do not know what your are doing... agree....
Continue and locate "Enter OBi Expert" button. Finally On the left side panel "Status" is among other sections of configurations Click on "System Status"; the right panel will display either:
1.) "Device is not online" See ***NOTE** above
or
2.) A display of the system configuration showing device information including the OBIWIFI MAC address.
After obtaining the OBIWIFI MAC address and configuring your filters on your router; you no longer need the Ethernet connection connected. Place your OBI Device anywhere in your house and enjoy. Don't forget to Enabling USB WIFI (*27) on device and configure it to connect to your home/office network.
Now you can go back home.
Go to optimum.com and add a device.
Put in the obiwifi mac ID where it says Mac ID, click other laptop.
Press *27 on the phone.
Follow the regular instructions to add a WiFi to the obiwifi.
Choose optimum WiFi.
No password.
Enjoy!!