GNU Free Call Announcement (17 March 2011)
The historic announcement launching the GNU Free Call initiative to build a self-organizing, decentralized, encrypted telecommunications network capable of replacing proprietary communications systems.
Historical Manifesto & Announcement
This document preserves the original 17 March 2011 announcement of the GNU Free Call project by the Free Software Foundation.
§1The Announcement (17 March 2011)
**Boston, MA - March 17, 2011** - The Free Software Foundation (FSF) and the GNU Project announce the launch of **GNU Free Call**, a project to develop and deploy self-organizing, secure, decentralized peer-to-peer telephone communications.
Telecommunications services are increasingly centralized, mediated by commercial monopolies, and compromised by government wiretapping initiatives. Centralized services-even those advertising encryption-maintain architecture capable of tracking user metadata, logging call durations, intercepting contact lists, and performing selective service shutdowns.
GNU Free Call leverages existing free software, specifically GNU SIP Witch, to create an open alternative. By enabling ordinary personal computers, domestic internet gateways, and mobile devices to act as autonomous SIP routing nodes, GNU Free Call eliminates the need for central service providers altogether.
GNU Free Call focuses on three primary pillars: 1. Decentralization: Utilizing distributed hash tables (DHT) and peer-to-peer mesh routing so that no single server or company controls the network. 2. Unbreakable Privacy: Enforcing end-to-end media encryption using Phil Zimmermann’s ZRTP protocol (RFC 6189), ensuring that only the talking participants possess the decryption keys. 3. Universal Compatibility: Operating directly over the Session Initiation Protocol (SIP), ensuring compatibility with existing open-source softphones such as Twinkle, Linphone, and CSipSimple.
§2Historical Significance & The FreedomBox Synergy
GNU Free Call received widespread international coverage across the technical press (Wired, Slashdot, LWN.net). It was formulated in close intellectual synergy with Eben Moglen's FreedomBox Foundation, which was founded in February 2011 to build small, cheap, plug-in home servers that reclaim privacy from cloud monopolies.
David Sugar envisioned GNU Free Call running as an automatic daemon inside every FreedomBox, turning ordinary homes into resilient telephone relays immune to state telecommunications blackouts (such as the Internet shutdowns witnessed during the 2011 Arab Spring).
This page reconstructs material originally published at gnutelephony.org. It has been formatted and annotated for archival preservation.
Historical source: GNU Free Call. Reproduced or adapted under the GNU Free Documentation License (GFDL) 1.2 or later where stated.
Historical revision date: 2011-03-17. Restored to permanent static archive in October 2026.