[Full-disclosure] anyone developing a secure telephony application for GSM CSD?

I would like to enter in contact with all the guys here that
worked/developed on encrypted/secure telephony apps.

Would like to start a community based platform for who worked/is working
on this kind of technology in order to establish a standardization and
interoperability path.

No, i am not talking about VoIP clients but encrypted voice clients that
leverage "legacy" telephony networks (GSM, SATCOM, PSTN, ISDN, etc).


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