www.digium.com

The creator and primary developer of Asterisk - an open source telephony platform.

URLs from www.digium.com:

URL: http://www.digium.com

URL: http://www.digium.com/en/

Tags: business voip

URL: http://www.digium.com/en/products/software/skypeforasterisk.php

Tags: skype

URL: http://www.digium.com/en/products/switchvox/

Tags: software voip