[arm-allstar] Wired tethering to phone (modem) usb or ethernet

[David McGough]

Whoops, the smokeping graphic didn't make it to the list. Here is a link:

https://hamvoip.org/photos/RPi3-wifi-example.png




On Fri, 24 Nov 2017, "David McGough via arm-allstar" wrote:

> 
> Hi Terry,
> 
> Yes, you can directly attach a phone to a RPi2/3 board via USB. However, 
> you've got to have the Linux drivers needed to pull this off; and what
> drivers you'll need will depend on your phone.
> 
> As has already been suggested, it's easier to just to use your phone as a
> WiFi hot-spot and connect using that method. I'm curious about what type
> of packet loss you're experiencing??  Unless something about your phone's
> "hot-spot mode" is flaky, I'd expect the WiFi connectivity to be rock
> solid.
> 
> As a testament to the reliability of the RPi3 WiFi hardware, I'll mention
> that I run all my "in production" RPi3 systems strictly via WiFi---not a
> single Ethernet cable in sight!! And, the long term performance is
> flawless. I've attached a graphic showing 30 hours of smokeping results
> for one of my systems, as monitored from my office. The tower site is 22
> miles away and there are 3 microwave links involved! ....Note that the
> bulk of the latency and jitter is due to all the infrastructure microwave
> networking.
> 
> 73, David KB4FXC
> 
> 
> 
> On Fri, 24 Nov 2017, "Terry Bethlehem via arm-allstar" wrote:
> 
> > The opposite. Use the phone as the router so to speak. What I am curious
> > about is making a physical connection between the pi and phone, so the data
> > tx rx from the pi, is connected to the phone. Like some specifically made
> > wireless routers, that have ethernet Jacks. I might just buy a Linux
> > compatible usb to rj45 dongle and see if it works. Whether I'd need a
> > crossover cable or standard, I guess I'll find out.
> > 
> > Back to one of my earlier questions. Does linux have the capability, like
> > windoze, to plug in a phone with a data usb cable, and use it like a
> > physically tethered modem?
> > 
> > On Nov 24, 2017 5:29 PM, Doug Crompton via arm-allstar <
> > arm-allstar at hamvoip.org> wrote:
> > 
> > > I assume you mean using the phone as a wireless hotspot to the Pi3
> > > wireless. This works fine and there should be no packet loss between theses
> > > two devices located close together. I suspect your problem is packet loss
> > > on your cell phone hotspot to whatever cell you are using. Hotspot
> > > connections are not perfect. You can expect occasional packet loss and in
> > > some areas no service. Everyone wants perfect but you are probably never
> > > going to get it on a cell hotspot. VOIP is real time without buffering or
> > > error correction and any disparity in the network will show up in what you
> > > hear. Switching sites causes a brief dropout If you were using a web
> > > browser or even streaming a movie which is buffered on your hotspot it
> > > would not even show up unless you were in a totally bad area. You might ask
> > > why your phone works better than the hotspot. Cell providers want the phone
> > > itself to work the best and thus it gets priority. Since most Internet use
> > > of a smart phone is limited to web browsing or some other service where the
> > > disparities don't show up they can get away with not having perfect
> > > internet.
> > >
> > >
> > > *73 Doug*
> > >
> > > *WA3DSP*
> > >
> > > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> > >
> > >
> > >
> > > On Fri, Nov 24, 2017 at 3:05 PM, "Terry Bethlehem via arm-allstar" <
> > > arm-allstar at hamvoip.org> wrote:
> > >
> > > > Does this distro have the ability to, like a pc, plug a phone into it,
> > > usb
> > > > cable, and the os of the pi can use the phone as a modem? Reason behind
> > > > this is that I sometimes get packet loss when doing wireless tether. I'd
> > > > like to try this and see if it fixes the problem and has better
> > > > performance.
> > > >
> > > > I thought about using an otg adapter, then a Linux compatible usb to rj45
> > > > adapter and feed the pi Internet. I've seen videos where the android
> > > phone
> > > > could be fed Internet this way, but haven't found any info yet about the
> > > > other way around. The phone providing Internet to the pi.
> > > > _______________________________________________
> > > >
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> > > >
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> > > >
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> > >
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> > 
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