Asterisk

Asterisk is a PBX server program to manage phones.

USE flags
Due to current limitations on the wiki, the USE flag list had to be divided into two separate sections.

Emerge
Install :

Testing
If no PBX hardware phones are available, linphone can be used to test the setup. This is a much less expensive solution than purchasing PBX hardware.

External resources

 * http://www.jdsu.com/productliterature/voipterm-wp-acc-tm-ae-0210.pdf