Ostn

Cross-Domain calling, or “toll-free long distance VoIP”

May 4, 2012

In a standard OSTN configuration, the Fully Qualified Domain Name (FQDN) of the server running Freeswitch is a core dependency to operate the service. …

Singing and Dancing for Encryption

April 19, 2012

If you see me dancing or singing with my phone in my hand, I may not just be having a great time, but also creating an encryption key. Part of the …

Call My Email

March 22, 2012

What if you could call me directly through my email? No exchanging of phone numbers or searching for handles on Skype. Just plain and simple email. …

Acrobits Groundwire – OSTN supports iPhone

March 21, 2012

The Guardian Project develops open source software primarily for the Android platform but we strive for security by design to be a part of all …

VoIP Survey Results of NGOs, Human Rights Groups and Activists

March 7, 2012

In November 2011, 25 individuals were surveyed using an online form, representing typical end-users, global journalists, activist and human rights …

Free SIP Providers with ZRTP support

February 22, 2012

This post is part of a series on our work researching the Open Secure Telephony Network. After you have CSipSimple installed on your mobile handset, …

Open Source SIP Client for Android

February 22, 2012

The first step in the Open Secure Telephony Network (OSTN) is a client. We can’t make a phone call without a phone. In this case there are three …

Open Secure Telephony Network

February 22, 2012

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 …