wireless voip set up

Please bear with me as I have no idea what I'm doing-which is why I'm here. I realize that this question may need to be moved
I just relocated to a new cabin in a rural, wooded area in which my cabin is one of 4 in a bit of a communal setting. I'm using a cell phone at the moment-completely undependable-and would like to set up my Ooma phone but as the router is not right here I don't know how to proceed, or if I even can. The internet is set up via a business class application whereby the main house has the router which is able to work for the other homes.
I have no place to run an ethernet cable from the Ooma device. There must be a way to do it but I'm simply pathetic when it comes to this stuff. Some time ago, in order to avoid Comcast's fees, I bought a modem/router and wondered if I could use a splitter to connect it to a small device that is connected to the one cable (coaxial) entering the house that is plugged in and splits off to the TV so we can get Comcast programming. And then run something to my router, lol, and the run an ethernet from the router to the Ooma box. Wow, I'm confused too. But my router would, in effect, become a relay.
Or is there a simple way PLEASE? Thanks for any help

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Have to write no.

I've never seen a modem/router be useful for this. But if you have good WiFi then all you need is a WiFi Ethernet client that will receive the WiFi and provide Ethernet for the Ooma. I'll supply 1 example. Since I do run your network I can't tell if there are router changes required.

Look at devices like

If your WiFi is not solid, this won't be either.

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Thanks. I'm not sure that I understand how the device at Amazon will work here. It seems to be primarily for streaming video, right? And how would I connect it to my home network-where? I have an Amazon Fire Stick to complement the limited TV we get. Can that be incorporated into all of this in some way? Or can I run an ethernet from the Netgear adapter to?

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In short.

It picks up the WiFi and gives access to devices that are Ethernet only.

It's simple but new networkers may fail at this one. Give yourself time to learn more about this device.

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Thanks. I get it - I appreciate your tactfulness.

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For the future.

Try to supply make and model numbers of what gear is in play to reduce guesswork.

So far, I've yet to see anyone reuse a combo modem+router box unless they are getting another connection from the ISP of the same type.

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It's the same

The modem/router that I bought was suggested by Comcast to use as a replacement for their modem. It is an ARRIS SURFboard SBG6580 DOCSIS 3.0 Modem-Router WiFi and worked perfectly at my other home. It's hard for me to explain but I just was wondering if it could be used as a kind of relay from the router in the main house (via the coaxial that comes into here) to the TV and the Ooma device-just as if it was a normal Ooma setup but using a relayed router. Knowing nothing about all of this as you can clearly see it seems feasible unless there's some kind of conflict using both routers

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Only if you have Comcast service

These Modem-Router combos are not much use for anything else without service.

And coax is for such a device but no service means you can't use it.

-> This is why and I'm guessing you are getting access via WiFi for now that the WiFi to Ethernet bridge (only one example device given so far) is my solution. You can place this where it gets the best signal from the current router and then wire it to your Ooma.

Setup should be just like an Ooma plugged into the router they are using at your location.

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I do

Internet comes from Comcast via wireless. The coaxial brings Comcast TV package that he pays for each month. It's a very mundane channel line up which is why I bought the Fire stick. So I do have Comcast service

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Then this modem router is useless.

Not the right device for the job. It's odd that Comcast didn't tell you this.

And this "Comcast via wireless" is not what you wrote up top.
"The internet is set up via a business class application whereby the main house has the router which is able to work for the other homes."

I'm going with your top description where the access is via WiFi. The device I noted is how I'd set it up.

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wireless vs wifi

I thought they were the same. I get the internet through our network(?) where, if not connected for whatever reason, I just type in his password and that's it. The coaxial is just for TV.
I'm so confused. It goes back to the original issue-where do I go with the ethernet that will attach to the Ooma device? That's why I thought of using my router so I'd have a place to plug the ethernet in.
I'll just play around with it. BTW, I've never spoken to Comcast about anything since moving here. I'm going to try different combinations using my router and the Amazon device of which you spoke. I just hope that I don't end up messing things up for the other 3 people on the estate.
Thanks for all of your help though most of it fell on stupid ears-a new expression. I lost the power converter for my router and had to buy one today from an auction site. I'll post as to the outcome of all of this in a week,or so. Keep an eye out

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I'm sticking with my advice

To get some WiFi to Ethernet bridge device. It's something I've used many times over the years. There are many models out there but this one didn't seem too expensive and the reviews were fine.

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You win

I'm going for your expertise'. I just reread the info about the Netgear product and some of the questions. It looks really promising (is this considered advertising & be banned?) So I just ordered it and we'll see what happens on Wednesday

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Just ask

I suggest you ask your neighbors or definety the main house that is supplying the wifi that is working. That tends to cut to the race and quickly get things done. Also, you seem to want your Ooma setup to work, but as i understand it it needs only the wifi address, thus again the wifi at the main house better offer the password in order to connect. Your setup locally to you, "YOU" supply what info needed, but usually the s/w setup should prompt you as it goes. The Ooma manual/guide fetched from their support website or actual paper manual supplies the data needed.

tada -----Willy Happy

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It all works

Thanks Willy and R.. Speaking with the man in charge of the estate is a trying process. But it's academic as I got it all to work. I first used the Netgear adapter which worked and the, once I discovered of its existence, bought the Ooma adapter and it works with fewer wires involved.
So I finally have my virtually free, reliable phone back. Thanks guys!

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Thank you for the update.

I hear you about talking to folk that run their estate or network. They get so many requests that your valid questions are just noise.

While some may say that's not right, keep asking questions until you see a way.

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