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[liberationtech] Ostel: encrypted phone calls

Mark Belinsky m at markbelinsky.com
Wed Jun 5 11:25:56 PDT 2013


When we initially developed ostel.me it used freeswitch but we've moved
away from it to allow for better federation. Ostel.co is a new
implementation of the open secure telephony network (ostn) standard

~Sent from my mobile. Please excuse any typos or terseness.
On Jun 5, 2013 2:19 PM, "Pavol Luptak" <wilder at trip.sk> wrote:

> On Wed, Jun 05, 2013 at 07:12:22PM +0200, KheOps wrote:
> > Hi all,
> >
> > Just came accross that: https://ostel.co/
> >
> > Open source software for encrypted calls, with a client that apparently
> > runs on a lot of platforms.
> >
> > Anyone ever used/reviewed it already?
>
> I used it with my Android SIP clients (CSIPSimple, Acrobits Softphone),
> It should be completely based on opensource FreeSWITCH
> http://www.freeswitch.org/ with enabled ZRTP support.
>
> CSIPSimple + FreeSWITCH is probably the best opensource ZRTP solution for
> end-to-end encrypted calls.
>
> BTW, what do you think about security of Threema http://threema.ch/en/?
> Now they have out Android version and it is very user-friendly,
> unfortunately
> it's still closed/proprietary software, so I am not sure about security.
>
> Pavol
> --
>
> ______________________________________________________________________________
> [Pavol Luptak, Nethemba s.r.o.] [http://www.nethemba.com] [tel:
> +421905400542]
>
> --
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