[Gta04-owner] Invitation to indicate interest in next batch of GTA04A5 boards
Denis 'GNUtoo' Carikli
GNUtoo at no-log.org
Tue Apr 2 22:42:36 CEST 2013
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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