Gemeinschaft (by Amooma) is the open-source PBX based on Asterisk, MySQL, Apache, and PHP, and is designed for high availability and clustering. It provides automatic provisioning for mass deployment, and can handle over 10,000 users. Administration is done via shell scripts or a Web GUI. Hot-desking and mobility are supported. German voice prompts are included. There is a standards-compliant Web GUI with internationalization (and German and English translations). Outbound and inbound routing with full PCRE support is included.
These details are provided for information only. No information here is legal advice and should not be used as such.