Using the mobile plan's unlimited calling feature for home phone service

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BillA
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Using the mobile plan's unlimited calling feature for home phone service

Post by BillA » Fri Jan 17, 2020 4:13 pm

The mobile data plan we use in our routers usually includes unlimited calling too, which is normally unused and wasted every month (except on the ATT iPad plan which doesn't include calling).

Most modems are both data and voice compatible, so I was wondering if anyone has been able to tap this unused calling feature from the router? It would be great to be able to simply connect an analog corded or cordless phone as an extra phone line since it's usually included with the mobile plan for free.

Most routers do not have a built-in voice circuit along with an RJ11 jack to plug in a phone, but one could use a OBI adapter box with the free GoogleVoice or some other VoIP service, connected to one of the LAN ports of the mobile router or through a usb WiFi adapter plugged into the OBI/VoIP box. The box is a one time purchase and GoogleVoice is free, so it's a great value. Another alternative would be the cheesy MagicJack. lol
OBI box/GoogleVoice info:

https://www.obitalk.com/info/products#home_section
https://www.youtube.com/watch?v=ka7PvQKUbzo
https://www.youtube.com/watch?v=h09R8RGiZZI

Please note, that GoogleVoice/VoIP is not the same as using your mobile plan's unlimited calling feature. Using the mobile plan's native unlimited calling, usually it will drop the LTE connection to 3G during phone calls since most modem don't have VoLTE capability, which would make your router's data speed slows down during phone calls. The OBI/VoIP solution does not drop the connection to 3G because it uses pure data. So if anyone has any other brilliant ideas to tap the mobile plan's voice from the router, feel free to drop a line.

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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by Didneywhorl » Fri Jan 17, 2020 10:02 pm

It would be a curious project for sure. I don't think an analog RJ11 connected phone device would work per say since there is no dial tone on a cellular line. But some form of voice channel/port usage programming and some circuit wizardry would prob get the job done.

Way outside my wheelhouse, but intriguing for sure.
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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by BillA » Sat Jan 18, 2020 12:56 am

Didneywhorl wrote:
Fri Jan 17, 2020 10:02 pm
It would be a curious project for sure. I don't think an analog RJ11 connected phone device would work per say since there is no dial tone on a cellular line. But some form of voice channel/port usage programming and some circuit wizardry would prob get the job done.

Way outside my wheelhouse, but intriguing for sure.
It would be fairly easy for router manufacturers to include a voice circuit complete with a fake dial tone, much like the OBI box but integrated onto the main board. The OBI box is different in that it uses VoIP and pure data, not the mobile plan's unlimited calling feature.
I've looked at the modem's pinout and there's definitely a voice channel component present, but it needs to be integrated further.

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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by Didneywhorl » Sat Jan 18, 2020 3:51 pm

Thatd be cool
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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by Didneywhorl » Tue Jan 21, 2020 12:04 am

Maybe if you could figure out how to use Quectels development boards, EVB kit, in combination with use of the data via USB to a router....


https://www.codico.com/shop/media/datas ... e_V1.1.pdf



It gives multiple audio interfaces and explains them in the user guide.
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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by BillA » Tue Jan 21, 2020 12:18 am

Didneywhorl wrote:
Tue Jan 21, 2020 12:04 am
Maybe if you could figure out how to use Quectels development boards, EVB kit, in combination with use of the data via USB to a router....

https://www.codico.com/shop/media/datas ... e_V1.1.pdf

It gives multiple audio interfaces and explains them in the user guide.

Well, the router maker is the one who should be integrating the voice circuit into the main board at about an extra $10 cost in parts. While it's doable with a piggy-back dev board it would be messy and not very user friendly. Without integration, the easiest solution is by adding a VoIP box to one of the ethernet ports (like an OBI or true VoIP box), and just use the mobile data for making voice calls.

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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by tambutso » Fri Feb 21, 2020 4:17 am

I have one of those OBi boxes. Reason I bought it because it was on sale. Worked great for over a year. Mainly for purposes of faxing, which was very rare but in a pinch, it is there if needed. Then Google changed their voice API and OBi, in my opinion, saw this as a chance to kill off my product since it was previous gen and pushed for the newer version which I had to buy, again. I refused to be fleeced so it's a nice paper weight gathering dust somewhere.

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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by BillA » Sun May 10, 2020 6:44 pm

tambutso wrote:
Fri Feb 21, 2020 4:17 am
I have one of those OBi boxes. Reason I bought it because it was on sale. Worked great for over a year. Mainly for purposes of faxing, which was very rare but in a pinch, it is there if needed. Then Google changed their voice API and OBi, in my opinion, saw this as a chance to kill off my product since it was previous gen and pushed for the newer version which I had to buy, again. I refused to be fleeced so it's a nice paper weight gathering dust somewhere.

Yeah I've see the new boxes, they are pretty affordable. But might be worth it for whoever wants free unlimited calling over their router. https://www.obitalk.com/info/googlevoice

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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by Dazed-and-Confused » Sat Jun 13, 2020 10:53 am

I live in the UK and I use the Obi 202 as my main phone and this is plugged into my Netgear WNDR3700 which then connects to my fibre cable providers modem.

I use VoipDiscount as my SIP provider as they are pretty cheap. £10.00 credit can last me over a year, and you get something like 170 free days that do not incur a charge for normal landline calls.

I didn't realise that it could be connected to the likes of a WE826-T2 via ethernet and then use the unlimited calls feature that a SIM provides, or did I misunderstand. Sounds good if it can be done.

I used to use a Linksys device which was similar to the Obi which I still have and it still works but I was intrigued by the newer model so upgraded.

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Re: Using the mobile plan's unlimited calling feature for home phone service

Post by Didneywhorl » Fri Jun 19, 2020 12:19 pm

Im not following your question on tbe we826. The router can use a phones SIM to get onto the data network, but it is incapable of voice usage directly.
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