Bridge mode? Pull Wifi network down to one RJ45 cable?

[wireless]

I have a spare Actiontec Telus WiFi Modem - T3200M which you all know well (if you're able to help).

GOAL:
I need to use it to connect to an authenticated wifi network and pull down internet to 1 RJ45 network connection, to plug in an internet phone (connects with network cable) for an elderly person who can't use a computer anymore.

I have logged in to the T3200M while directly connected, gone to Advanced and enabled port bridging. Then connected to the modem again via Wifi, as the direct-connect cable (port 1) didn't get me anything trying to connect to 192.168.1.254 on the cable.

Now I'm stuck.
How/where in the interface do I search for Wifi networks, and authenticate into the target wifi network, connecting this modem, and presumably, gaining a live network cable in port 1?

Am I mis-understanding the capability?
Can this be done? I've poked through locked articles for info but am not finding what I need.

So, with full admin access to the 'bridge mode'-ed modem, here I'm stuck.

I'd prefer to do this with this hardware I have ( I think I'm just lacking setup smarts). Can you advise?

Alternatively, If there's a super-simple device I can grab off amazon that will do that please let me know.
A decade or two ago NetGear had a superb little travel router that could do that in a heartbeat in either direction but it's long been unavailable.

I'd really like to get this hard-of-hearing elder connected to a network phone and get one of those loud assistive phones, as she just can't hear on a mobile anymore, even at FaceTime volume with an ear on the screen.



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