Our mobile service is poor and our internet has just been upgraded to GB fiber. Our “land line” phone number is VOIP provided by ISP and with an adaptor (ATA they call it) connected to our ~7 year old cordless ATT phone. VOIP on the ATT is pretty good.
We also each have a 2020 SE iPhone. According to our ISP, there is no way to connect our phones to our internet and make better quality calls than the ones we make with the mobile cell service. They say that calls make our iPhones are totally dependent on the mobile’s signal strength - rarely more than 1 bar.
We are imagining using our laptops and internet to make phone calls. We know google voice exists. What other services/solutions can be set up on our computers to take advantage our great internet? And is there any way, we could use our landline number?
Another option, albeit more complex, is to transfer your VOIP service to a Google Voice number.
The process is unfortunately a bit complex. You can import a cellular phone number to Google to become a Google Voice number; they charge $10 to do this. However, you cannot transfer a VOIP number from a cable internet provider to Google Voice. What you have to do is transfer the phone number to a cellular service (eg you get a cheap SIM card for an cell phone and transfer the number to a cellular service); then you wait for the transfer to be done and then import the number to Google Voice.
Once you have done that, there are various vendors that provide hardware that can connect to a Google Voice account and allow you to connect a standard telephone to them. Orbi is, I believe, once such vendor.
This sounds good, in theory, but in full disclosure this has been on my todo list for some time but I haven’t actually done the steps myself so I cannot guarantee it all works.
There are also cordless phone systems (I have one) that allow you to connect your cell phone to them, BUT again I have not tried anything like this.
I would propose that using WiFi calling from your cell phone if your cell provider allows it is the simplest solution.