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The Dismantling of POTS: Bold Move Or Grave Error?

New submitter TheRealHocusLocus writes "The FCC is drafting rules to formalize the process of transition of 'last-mile' subscriber circuits to digital IP-based data streams. The move is lauded by AT&T Chairman Tom Wheeler who claims that significant resources are spent to maintain 'legacy' POTS service, though some 100 million still use it. POTS, or 'Plain Old Telephone Service,' is the analog standard that allows the use of simple unpowered phone devices on the wire, with the phone company supplying ring and talk voltage. I cannot fault progress, in fact I'm part of the problem: I gave up my dial tone a couple years ago because I needed cell and could not afford to keep both. But what concerns me is, are we poised to dismantle systems that are capable of standing alone to keep communities and regions 'in-touch' with each other, in favor of systems that rely on centralized (and distant) points of failure? Despite its analog limitations POTS switches have enforced the use of hard-coded local exchanges and equipment that will faithfully complete local calls even if its network connections are down. But do these IP phones deliver the same promise? For that matter, is any single local cell tower isolated from its parent network of use to anyone at all? I have had a difficult time finding answers to this question, and would love savvy Slashdot folks to weigh in: In a disaster that isolates the community from outside or partitions the country's connectivity — aside from local Plain Old Telephone Service, how many IP and cell phones would continue to function?"

12 of 582 comments (clear)

  1. Cell phones are better in a disaster by thesandbender · · Score: 5, Interesting

    1. If a hurricane/tornado/earthquake/what-have-you destroys your POTS infrastructure, it can take weeks or months to rebuild it. You can restore cell service in matter of hours with a mobile cell site.
    2. The same applies to your house. What good is a fixed, "simple" phone if your house isn't there any more?
    3. One of the biggest issues when a disaster strikes is locating people. POTS doesn't do anything to help with this.

    POTS was great but it's had it's time and we need to stop supporting it and move on newer technologies.

    1. Re:Cell phones are better in a disaster by Lisias · · Score: 5, Insightful

      Good points.

      On the other hand, cell phones are useless a few hours after a electrical blackout (as no one will be able to charge their phones), while thousand of POTS users (ha! I can't avoid smiling while typing it!) can be served using a big enough diesel generator.

      Hell broke havoc in Rio de Janeiro and São Paulo em 2009. Cell phones were useless because *everybody* (and the neighbor's kitten) was trying to call someone by cellphone to call for help or simply tranquilize their relatives. The ones tha managed to do that were the ones with analog phone lines (as the analog phone operators can redirect their power supplies in order to keep the phone lines working).

      At that time, I already had switched my analog phone line to a VOIP one. My relatives lives far away, and I managed to call them 4 or 5 hours later, thanks to a very kind supermarket manager that borrowed me a power plug from the place (they have a diesel generator) to charge my pretty, advanced but useless smartbrick, I mean, smartphone.

      There's no single, easy and cheap answers to complex problems.

      --
      Lisias@Earth.SolarSystem.OrionArm.MilkyWay.Local.Virgo.Universe.org
    2. Re:Cell phones are better in a disaster by thesandbender · · Score: 5, Insightful

      I'm actually speaking from experience. I live in NYC and last year during Sandy we ran into many of the problems you describe. Business and Individuals in areas that still had power were setting out extension cords and power strips for people to recharge their phones. Mobile generators can be used for the same purpose (and growing up in Texas it was my experience that most people in isolated rural areas either already have a portable generator or know someone close by that does).

      The situation you described in Rio and Sao Paulo is not unique to cell phones. POTs systems have a limit on how many calls they can support as well, the dreaded "all circuits are busy message" here in the states. The reason POTs lines are less susceptible to that now is that fewer people are using them so it doesn't happen as often. A common solution to this is to tell people just to text instead of making calls, that helps reduce the load on the cellular infrastructure.

    3. Re:Cell phones are better in a disaster by Miamicanes · · Score: 5, Interesting

      The difference is that 25 years ago, it took a direct hit by a category 5 hurricane to make a visible dent in the phone network. There was no need to rebuild the phone network, because most of it never quit working in the first place. After Hurricane Andrew, people came home to neighborhoods so completely destroyed, they had to count streets and driveways to find the wreckage of their house... and more often than not, if they plugged a legacy-style phone into a phone jack, it worked. You can use Google to find stories from the Miami Herald about people who came home to a pile of rubble... and a very loud "off-hook" sound coming from a phone buried underneath.

      Compare that to now, where a goddamn slow & sloppy tropical storm (like Isaac) can take out U-verse and Comcast for at least half the day (Which is exactly what TS Isaac did, in northern Dade and southern Broward counties) just because a few distant neighborhoods (where their regional network operation centers are located) lost commercial power for a day, and they didn't have enough backup power to keep them running. It's DISGRACEFUL.

      As for #2, your house might not be "there" (in the sense of being habitable) any more, but if the storm is still in progress, working phone service is still a good thing to have.

  2. "Bold Move Or Grave Error?" by Lisias · · Score: 5, Insightful

    Probably both.

    It's hard to keep analog transmission lines when you can transmit thousands of times the same information using a digital channel that costs the same (or even less).

    But communication is not *just* about cheapness, it's about reliability. Analog lines are far more resilient than digital lines, and a wise one should take this in consideration on the long term.

    A cheap telephone line that I can't use when I really need is a useless telephone line.

    by the way, are you americans happy with your broadband internet connection? What do you think it will happen with your telephone services when it will be serviced using the same technology by the same players your Internet connection is served now?

    --
    Lisias@Earth.SolarSystem.OrionArm.MilkyWay.Local.Virgo.Universe.org
  3. "Can you hear me now?" by mariox19 · · Score: 5, Insightful

    The call quality on both cell phones and IP phones is worse than those on traditional phone lines. IP phones echo and stutter. Cell phones give no aural feedback in the earpiece of the person speaking, which is why everyone is always yelling over their cell phone, and cut out when no one is speaking, which sounds like a dropped call. I think anyone who enjoyed two, three, or more decades in the last century, making phone calls over POTS lines, would agree that we have taken a step back in call quality. Every phone call is like an overseas call from the 1970's. Pulling up the POTS lines would be a mistake.

    --

    quiquid id est, timeo puellas et oscula dantes.

  4. POTS... by gerardrj · · Score: 5, Informative

    Isn't as plain or old as you make it out to be. I'm about 2 miles from my CO but my phone line terminates in a climate controlled cabinet about 1,000ft from my house. That's the end of the line for my pair where the line is powered, digitized and bridged to fiber for the haul back to the CO.
    Even without that the addition of DSL about 2 decades ago added a lot of complexity to the system with DSLAMs and other digital equipment. Much of that digital stuff was spliced in between the switch and CPE on the CO or line side, but it was still there.

    The COs I've been in also don't use the card coded switches you seem to be talking to; they use gigantic digital affairs that are all basically computers and handle not only the line pair for voice, but DST, T and D trunks, interoffice signaling and such.

    The reason this stuff is all so resilient is the power supply. Nothing in the CO runs on wall voltage; it's all -48vDC and runs from a battery bank the size of a small house. The batteries are constantly charged from mains at the rate of their depletion by the equipment. In case of power failure where they batteries are being drawn down a generator auto-starts and switches from mains to local power to re-charge the batteries. Note that in this setup the load equipment is never switched from one power source to another (a major single-point of failure).

    That said... Im not against reforming or eliminate the last vestiges of POTS.Less that 1/3 of the population HAS it and I'd bet even less than that actually use it. By that I mean that I think less than 1/10th of the US population has a telephone in their house that will work solely from CO power on the line pair without a wall wart.

    --
    Article X: The powers not delegated... by the Constitution...are reserved...to the people
  5. Get an Amateur Radio license by Beacon11 · · Score: 5, Informative

    And learn to charge your batteries without the power grid. I think that's what you're looking for here-- POTS won't last long during a catastrophe.

  6. Re:Wrong Identification in Summary by crunchygranola · · Score: 5, Informative

    No, not At&T chairman, nor even a former At&T chairman. Instead is the former President and CEO of the National Cable Television Association (NCTA) and former President and CEO of the Cellular Telecommunications & Internet Association (CTIA). Head of both the cable and cell phone industry lobbying groups! What's not to love?

    --
    Second class citizen of the New Gilded Age
  7. AT&T has a valid point. by faedle · · Score: 5, Insightful

    We have this impression of the reliability and stability of the POTS network partially because it is ubiquitous and invisible. Yet, as someone who has spent most of my adult life working in and around copper twisted pair, I can tell you POTS isn't as "reliable" as you think.

    You have the impression that POTS is reliable because there's a small army of men and women maintaining it. AT&T is claiming that it is costing them a fortune to maintain the copper twisted pair infrastructure to the standards dictated by the FCC for a rapidly dwindling number of customers. People are leaving copper-pair services by the thousands every day: some are going wireless, some are going to pure-play VoIP providers, and even the "cable company" (or the telephone company's own fiber).

    Copper wire only lasts 20-30 years hanging from the side of a pole, on average, before it will likely need to be replaced. Especially in urban areas, where cable replacement isn't cheap, most of the landline phone companies are staring down the barrel of 50-60 year old copper infrastructure that may have as many as 75% of the pairs condemned.

    Let me put it this way. No IT department for a business in a 100-year-old building facing a phone rewire job would replace all that 50-year-old 25-pair with.. more Category 2. The minimum they'd pull is Cat5e or "6", and even more likely they'd pull a significant amount of fiber, if not to the desk at least to a departmental wiring closet. That's the same decision the phone companies want to make.

    From a strictly technical/engineering perspective, it's 100% the right choice. Copper loop is functionally obsolete in almost every way.

  8. Not about VoIP either by Anonymous Coward · · Score: 5, Insightful

    This isn't about dropping POTS in favor of wireless. It is about using VOIP instead of POTS, wiring still required.

    This isn't about dropping POTS in favor of wireless. It is about using any technology that isn't specifically named in federal law as subject to pricing, quality and access regulatory controls.

  9. Re:It is a terrible idea by VortexCortex · · Score: 5, Interesting

    I agree. However, I could agree to dismantling of POTS if they FIRST also lessen regulations on a swath of HAM for use by the public, and also legalize packet radio over CB, Family band, and other public use frequencies. We have the technology to radio for help in times of emergency -- Indeed HAM operators are sometimes on the scene in disasters before paramedics arrive. They already play a role in Earthquakes and other times when infrastructure is threatened. Lower the barrier for the common man to have greater ability to communicate first then I'll reconsider my stance on our keeping wired POTS going.

    We have the technology for radios to negotiate to noise free channels automatically -- hell, my cheap wifi router does this. The cellular system exists, but we need a similar mesh network for the common people. The EM spectrum belongs to We the People, give us back some damn air waves instead of charging us for all of them. It's the information age, yet outdated packet radio laws remain repressive to progress. Problem is that the government can't just throw a kill switch on public powered wireless devices -- Like they can on the Internet (and probably telephone too).

    It would be foolish to ignore that the government has an Internet Kill Switch, vast spying infrastructures, and a pro-censorship anti-discourse agenda whereby government agents actually plan to expose porn habits to silence dissent, while considering migrating any communication medium to IP based services. Furthermore -- The price of bits does not reflect the cost to distribute them. Cellular plans make a mockery of POTS long distance fees, and though it's never been cheeper to move bits the prices aren't going down nearly as fast as in foreign markets with actual competition. We need less regulation of the public sector and more regulation of the private sector's price fixed oligopoly before I'd ever advocate for tossing POTS out. Additionally: Unwarranted metadata collection is too powerful a tool already -- If Snoden can infiltrate PRISM, so can spies from enemy states.

    Beware: When those in power advocate change, the changes suggested never give those they have power over more freedom.