[Gta04-owner] Invitation to indicate interest in next batch of GTA04A5 boards
joerg at openmoko.org
Tue Apr 2 23:25:35 CEST 2013
On Tue 02 April 2013 22:42:36 Denis 'GNUtoo' Carikli wrote:
> On Tue, 26 Mar 2013 15:58:10 +0100
> Radek Polak <psonek2 at seznam.cz> wrote:
> > I think there might be interest in encrypted GSM calls - those
> > customers would be not worried by big price. It's just matter of
> > implementing SW for it.
> There are several solutions for that but using plain GSM won't work
> because of the TRAU(Transcoder and Rate Adaptation Unit) in the GSM
> Using data calls directly would be too expensive...
> So the best solution is to use encrypted SIP over the internet(like
> trough a 3G connection) possibly over a VPN(because some providers
> prevent SIP to go trough their networks).
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> community at lists.openmoko.org
GPRS CSD data calls are not necessarily expensive, just incredibly hard to find
nowadays. No carrier offers them anymore, and even most modems don't support
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