I have full size "flat" USB cables. I use mini-USB cables to wire pressure sensors into volt-oil pressure gauges. I use ethernet cables to connect the pickups to my ignition system. Non-traditional uses, I know.
The DD-WRT solution will not work as I do not have access physically to the modem and I doubt they will let me change the modem software. This is why I need a PC or raspberry to connect to their WiFi.
I looked at the ObiWiFi adapter information PDF but it gives no information on how the connection to the wireless modem is made. No point in buying more equipment with only guesses that it will work. The modem has a password and since there is no way to input one from the Obi200 or the Obi-WiFi I doubt it will be able to make the connection, hence the PC or raspberry in between.
I found the administration guide under the DOCS which might give some answers. Their "data sheet" is merely advertisement.
The
raspberrypi.org description of a wired access point or bridged access point both have the raspberry wired to the modem and wireless to the client.
The phone is a Captel 800 which does not have WiFi.