At decade's end, the trusty landline telephone could be nothing more than a memory.

Telecom giants AT&T and Verizon Communications are lobbying states, one by one, to hang up the plain, old telephone system, what the industry now calls POTS--the copper-wired landline phone system whose reliability and reach made the U.S. a communications powerhouse for more than 100 years.

Last week, Michigan joined more than 30 other states that have passed or are considering laws that restrict state-government oversight and eliminate "carrier of last resort" mandates, effectively ending the universal-service guarantee that gives every U.S. resident access to local-exchange wireline telephone service, the POTS. (There are no federal regulations guaranteeing Internet access.)

The two providers want to lay the crumbling POTS to rest and replace it with Internet Protocol-based systems that use the same wired and wireless broadband networks that bring Web access, cable programming and, yes, even your telephone service, into your homes. You may think you have a traditional landline because your home phone plugs into a jack, but if you have bundled your phone with Internet and cable services, you're making calls over an IP network, not twisted copper wires.

California, Florida, Texas, Georgia, North Carolina, Wisconsin and Ohio are among states that agree telecom resources would be better redirected into modern telephone technologies and innovations, and will kill copper-based technologies in the next three years or so. Kentucky and Colorado are weighing similar laws, which force people to go wireless whether they want to or not.