Design a complete Voice over IP (VoIP) or traditional PBX system with Asterisk, even if you have only basic telecommunications knowledge. This bestselling guide makes it easy, with a detailed roadmap that shows you how to install and configure this open source software, whether you\"re upgrading your existing phone system or starting from scratch....

Design a complete VoIP or analog PBX with Asterisk, even if you have no previous Asterisk experience and only basic telecommunications knowledge. This bestselling guide makes it easy, with a detailed roadmap to installing, configuring, and integrating this open source software into your existing phone system....

This bestselling book is now the standard guide to building phone systems with Asterisk, the open source IP PBX that has traditional telephony providers running scared! Revised for the 1....

It may be a while before Internet telephony with VoIP (Voice over Internet Protocol) reaches critical mass, but there\'s already tremendous movement in that direction. A lot of organizations are not only attracted to VoIP\'s promise of cost savings, but its ability to move data, images, and voice traffic over the same connection....