<html><body bgcolor="#FFFFFF"><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "><div>Last time I looked, no OpenBTS does not (yet) support handoff between base stations during a call. </div><div><br></div><div>Handoff between calls can be done using SIP registrations to a central asterisk. </div></span><div><br></div><div>Tim. </div><div><br>Sent from my iPhone</div><div><br>On 23 Aug 2010, at 13:42, equis software <<a href="mailto:equissoftware@gmail.com">equissoftware@gmail.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div>Do you know if OpenBTS support handoff?<br><br>Thanks<br><br><br><div class="gmail_quote">On Fri, Aug 20, 2010 at 12:32 PM, Steve Totaro <span dir="ltr"><<a href="mailto:stotaro@totarotechnologies.com"><a href="mailto:stotaro@totarotechnologies.com">stotaro@totarotechnologies.com</a></a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On Fri, Aug 20, 2010 at 10:41 AM, Tim Panton <<a href="mailto:thp@westhawk.co.uk"><a href="mailto:thp@westhawk.co.uk">thp@westhawk.co.uk</a></a>> wrote:<br>
><br>
><br>
><br>
> On 19 Aug 2010, at 20:59, Randy R wrote:<br>
><br>
>> On Thu, Aug 19, 2010 at 12:37 PM, Alan Lord (News) <<a href="mailto:alanslists@gmail.com"><a href="mailto:alanslists@gmail.com">alanslists@gmail.com</a></a>> wrote:<br>
>>> On 19/08/10 18:20, equis software wrote:<br>
>>>> I want to know about asterisk and openBTS<br>
>>> This island runs it's GSM network on OpenBTS: <a href="http://www.niueisland.com/" target="_blank"><a href="http://www.niueisland.com/">http://www.niueisland.com/</a></a><br>
>>><br>
>>> This was the place he presented about.<br>
>>><br>
>>> Read the blog here: <a href="http://openbts.sourceforge.net/NiuePilot/" target="_blank"><a href="http://openbts.sourceforge.net/NiuePilot/">http://openbts.sourceforge.net/NiuePilot/</a></a><br>
>><br>
>> and more about the installation here:<br>
>><br>
>> <a href="http://vuc.me/2010/island-telephony-adventure/" target="_blank"><a href="http://vuc.me/2010/island-telephony-adventure/">http://vuc.me/2010/island-telephony-adventure/</a></a><br>
>><br>
><br>
><br>
> I was part of the team that went to Niue to install OpenBTS,<br>
> I'm happy to answer questions if you have them,<br>
> although I'm not the radio guy - asterisk is more my thing :-)<br>
><br>
> Tim.<br>
><br>
> Tim Panton - Web/VoIP consultant and implementor<br>
> <a href="http://www.westhawk.co.uk" target="_blank"><a href="http://www.westhawk.co.uk">www.westhawk.co.uk</a></a><br>
<br>
</div>In all reality, Asterisk could be substituted with any other platform.<br>
<br>
All the magic happens in the USRP, OpenBTS, and the cellular phones.<br>
Asterisk is merely handling the routing and voice, same as it ever<br>
was. It is just the top of the stack.<br>
<br>
I have two USRPs and a handful of daughter boards, and yes I have two<br>
flex 800s that have been physically altered so they can also be flex<br>
1800s with a simple command line. These are the boards you want for<br>
GSM (Cellular).<br>
<br>
There is also a project to be able to listen into phone calls (thanks<br>
to the French making encryption so weak) besides a ton of other<br>
applications that can be dreamed up.<br>
<br>
You can do passive radar, track people that have cell phones powered<br>
on, RFID (Free tolls anyone?), WiFi, heck, you can even kill people<br>
with certain types of pacemakers.<br>
<br>
While OpenBTS is cool and is on topic with Asterisk, read up on<br>
GNURadio and all the projects and applications you can come up with.<br>
It is really cool technology.<br>
<br>
Start here <a href="http://gnuradio.org/redmine/projects/show/gnuradio" target="_blank"><a href="http://gnuradio.org/redmine/projects/show/gnuradio">http://gnuradio.org/redmine/projects/show/gnuradio</a></a> but you<br>
can easily find things like this<br>
<a href="http://tech.mit.edu/V128/N30/subway/Defcon_Presentation.pdf" target="_blank"><a href="http://tech.mit.edu/V128/N30/subway/Defcon_Presentation.pdf">http://tech.mit.edu/V128/N30/subway/Defcon_Presentation.pdf</a></a> or come up<br>
with your own with a bit of imagination and skillz.<br>
<br>
Thanks,<br>
<font color="#888888">Steve Totaro<br>
</font><div><div></div><div class="h5"><br>
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