I've recently got BT FTTP and the free VOIP phone they supplied is wireless to the router. Comes with a base for charging that's not plugged in to the network - just to the mains. Quite a nice phone actually, for free.
Note that VOIP phones need the internet, so in an emergency - eg a fire - where the electric goes off, you need a backup mobile phone to call 999 .
Mine came with a dect base station that plugged into the network, I think the newer BT routers have that built-in now.
We use a simple Ooma box.
It plugs into the router with a standard RJ45 connector.
The cordless phone base station plugs into the Ooma box with the same cable that used to plug into the wall.
The service was $4/month in NC. Here in PA it's $7/month. Unlimited calling in the US and Canada.
The same old set of cordless phones works the same way it did before.
And cheaper than the cable companies (usually $10/month or more).
No it doesn't as I have Digital Voice and only have FTTC. I still have the copper wire connection from my house to the cabinet but I now plug my phone into the Digital Voice port on the back on my Smart Hub 2.
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The reason is that they are retiring the old copper network as it is expensive to maintain and also quite unsightly with all these wires running from poles to houses. The phonecalls are just being delivered along the Broadband connection which enables HD quality calls, multiple calls at once as well as some other features.
Fiber is not needed. I've had phone service through my ISP for years long before there was Fiber available anywhere. Once I signed up for it all I had to do was run a cable with standard RJ-11 connectors from the Gateway to my exiting phone jack on the wall. That way all the landline phones in my home would be connected. Each modem or gateway I had include Voice so that they could be used for the optional phone service from my ISP. Also, each device had 2 RJ-11 connectors so up to 2 independent phone lines could be activated. Each one is a separate charge from my ISP. Note I used a RJ-11 two-way splitter so I could share the RJ-11 wall jack with an existing land line phone in the same room as the Gateway.
Years ago some people complained to the FCC when ISP supplied VOIP phone plans could not guarantee 24/7 service especially when there was a power outage. The FCC response was to tell people if they required that they would need to provide their own alternate service such as a cell phone plan.
Below shows the Digital Voice phone service on my plan after I added in January 2013.
Below is my current Xfinity (Comcast) Gateway. Note the two RJ-11 connectors on the back.
The phone companies that provide traditional landlines provide cables that have power (12 volts at about 30 milliamps) on them. That maintains phone service for wired phones even when there is a power outage. From past experience this is not indefinite. One time after a county wide power outage my landline stopped working after two or three days.
Like I said in my previous post the Gateways (mode/routers) that provide Digital Voice via VOIP normally don't provide emergency power in case there is a power outage. That is something that is not talked about. My previous gateways had a provision for an optional battery. Once I added that it was supposed to provide phone service for up to 8 hours. My current gateway has no provision for a battery. To provide power for my gateway during a power outage I bought a UPS for it.
Whether it is fibre or wires makes no difference they are both "landlines".
The difference is the phone signal goes via the broadband signal on the fibre/wires not via the older telephone system.
i.e. you plug a new phone into your Modem/Router if suitable or an adapter like this.
https://www.bt.com/content/dam/bt/he...-userguide.pdf
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