[SGVLUG] 56kbps over cable phone?

[Christopher Smith]

So, it's kind of a weird case, because technically VoIP can allow for more
bandwidth than a regular phone line, but in practice all the voice
compression algorithms are designed to get you well below the bandwidth of
a regular phone line. Add in the timing issues from buffering... ick.


On Sun, Dec 2, 2012 at 5:59 PM, Dan Kegel <dank at kegel.com> wrote:

> I'll go out on a limb and predict that you'll get at most
> 28Kbps regardless of whether you use a real POTS line.
> To get 56Kbps, you have to have an ISDN-like connection
> on the server side, otherwise you run into Shannon's limit.
> See http://en.wikipedia.org/wiki/56_kbit/s_modem
> - Dan
>
> On Sun, Dec 2, 2012 at 5:51 PM, Jess Bermudes <jbermudes at gmail.com> wrote:
> > I've never had phone service through a cable company. Do the phones plug
> in
> > to some special box that hooks up to the cable system via coax?
> >
> > Perhaps you can do an experiment and try to sign up for netzero or some
> > other dialup ISP to see if your modem signals can travel over the line?
> >
> >
> >
> > On Sun, Dec 2, 2012 at 5:34 PM, Christopher Smith <cbsmith at gmail.com>
> wrote:
> >>
> >> I have no idea if it'd work, but it'd be funny as all get out to try. My
> >> bet is it works but not nearly at 56kbps. I'd try to get one of the
> cheapest
> >> phone lines the phone company offers instead.
> >>
> >> --Chris
> >>
> >> On Dec 2, 2012, at 5:24 PM, Braddock Gaskill <braddock at braddock.com>
> >> wrote:
> >>
> >> >
> >> > On Sun, 2 Dec 2012 17:20:36 -0800, Jess Bermudes <jbermudes at gmail.com
> >
> >> > wrote:
> >> >> You want a POTS line specifically to only use for a 56k connection to
> >> > the
> >> >> internet?
> >> >
> >> > I was thinking of setting up a dial-up bbs.
> >> >
> >> > -braddock
> >> >
> >> >>
> >> >>
> >> >> On Sun, Dec 2, 2012 at 5:18 PM, Braddock Gaskill
> >> >> <braddock at braddock.com>wrote:
> >> >>
> >> >>>
> >> >>> Does a 56kbps analog modem have any hope of traversing a Time Warner
> >> >>> Cable
> >> >>>
> >> >>> (voip?) phone line?
> >> >>>
> >> >>>
> >> >>>
> >> >>> If not, what is the cheapest way to get an old fashioned hard POTS
> >> > line?
> >> >>>
> >> >>>
> >> >>>
> >> >>> -braddock
> >> >
> >>
> >
>
>


-- 
Chris
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