Project revival: TwoSquares is preserving GNU Telephony's history and preparing an open-source revival. Contributors and collaborators are welcome.
GNU Telephony
Open-source telephony, preserved and being revived
From the historical GNU Telephony project

GNU ccAudio2

Historical overview of GNU ccAudio2, the C++ audio processing framework used for telephony audio files, sample formats, codecs, and voice-oriented stream operations.

Historical Component and Revival Candidate

This page preserves the ccAudio2 project identity and its historical package references. Current support and a modern repository will be announced as the GNU Telephony revival is defined.

ProjectGNU ccAudio2
Doc TypeHistorical Project Overview
Original DateHistorical GNU Telephony project period
RestoredOctober 2026
LicenseGFDL 1.2+
SourceHistorical Archive

§1Project Overview

GNU ccAudio2 was a portable C++ class framework for working with telephony audio. It provided reusable interfaces for audio files, sample formats, codecs, and stream-oriented processing needed by voice applications in the wider GNU Telephony ecosystem.

The library belonged to the same family of reusable system components as GNU Common C++, GNU uCommon, GNU ccRTP, and GNU Bayonne. Distribution packaging and review records identify ccAudio2 as a distinct upstream component rather than a generic download alias.

§2Historical Packaging and Releases

Surviving Linux distribution records reference the 2.1.x release series, source RPM packages, package specification files, and the historical `dev.gnutelephony.org` distribution service.

These references are being catalogued for preservation. Original artifacts will be restored at their historical URLs when a trustworthy copy and its provenance can be verified.

§3Open-Source Revival

TwoSquares is preparing a community-driven open-source revival of GNU Telephony. ccAudio2 is being assessed as a historical component and possible source of reusable design and compatibility work.

Developers and package maintainers with original ccAudio2 source archives, specifications, build knowledge, or distribution history are invited to contact TwoSquares through the main project website.

This page reconstructs material originally published at gnutelephony.org. It has been formatted and annotated for archival preservation.
Licensing & Attribution

Historical source: GNU ccAudio2. Reproduced or adapted under the GNU Free Documentation License (GFDL) 1.2 or later where stated.

Document Revision Record

Historical revision date: Historical GNU Telephony project period. Restored to permanent static archive in October 2026.