Open Source Telephony Network
Over the last two months, I have been working on a project to research and
develop a set of tools to provide secure peer to peer Voice over IP on the
Android mobile platform. It is called the Open Source Telephony
Network, or OSTN. This work
is done under the umbrella of The Guardian
Project.
The project will continue for another four months and I will post my public
findings here. It's well underway and I have developed a functional system in
the SATELLITE lab in New York City. The goal by the the end of the project is to
offer an alternative to Skype or Google Talk, which are both good voice services
but don't offer the kind of security needed by human rights activists and
journalists.
Right now the stack looks like this
A client that understands the SIP protocol and the ZRTP protocol
A server that can register SIP users and pass off the ZRTP traffic to
peers
Sounds simple enough, though the development landscape for these applications
changes quickly, as does the legal implications of various implementations of
both protocols.
On top of that, there are networking issues that make building this kind of
network a challenge.
Stay tuned!
Written on
2012-01-10 22:03:09 UTC
