In a lot of places a "landline" is:

a) a phone using the ITU protocols, connecting to the router over ATM, or

b) a straight up SIP / VOIP phone which just happens to be operated by your ISP, but which could, in principle, work anywhere, as long as it was connected to the internet, or

c) a cell phone in a landline-like enclosure, perhaps with a carrier-side restriction that prevents its SIM card from working outside its intended local area.

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mrweasel 7 hours ago | parent [-]

That is pretty interesting, because I figured that maybe that would solve my issue of trying to get a cheap "landline". Sadly no. My ISP also doesn't want to do VOIP. They have the product, but doesn't sign up new customers.

	▲	protocolture 6 hours ago \| parent [-]
		Voip is a classic loss maker for ISPs. Right up there with email servers and DNS. It increases their attack surface and support costs without any real bottom line benefit. I suspect I will be adding IPTV to that list in 5 years too.