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I must admit that I'm more than a little surprised a what people read around here. The single most popular article is the one I wrote back in January 2006 about Building An Embedded Asterisk Server Using Astlinux On a…

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CMPs No Jitter Revisits QoS

Josh Bartlett over at CMPs No Jitter is again touching on Qos in a post called QoS Has Four Parts. It's a good summary of some of the mechanics underlying the implementation I describe in my series on VOIP over…

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How To: Building an Embedded Asterisk PBX

This article was originally published at www.smallnetbuilder.com.

Michael Graves
January 13, 2006

The Asterisk open source Voice over IP (VoIP) PBX is usually set up on a standalone PC. But Michael Graves shows how the combination of a special Asterisk distribution and a single board computer can provide a compact, quiet and low-power alternative.

Introduction

Astlinux is a bundled distribution of the Asterisk open source iPBX private branch exchange (PBX) software and a Linux operating system. Originally developed by Mark Spencer at Digium, Asterisk is the leading open source software in the telephony/VoIP space. Asterisk excels at combining traditional TDM telephony capability – provided through hardware from Digium and others – with VOIPservices. These include call routing, media gateway, media server and SIP signaling capabilities.

The Asterisk user community has been growing tremendously over the past two years, especially since the v1.0 release in the fall of 2004. With that growth has come the development of new distributions that bundle suites of software tools, to ease the setup and administration of a new Asterisk system. Asterisk@Home and Xorcom Rapid are both fine examples of this sort of activity.

Astlinux was developed by Kristian Kielhofner, and intended to go in a fundamentally different direction. Astlinux provides an Asterisk installation on a Linux distribution that has been built from scratch and optimized for small format hardware platforms – it takes what is essentially an embedded systems approach to Linux and Asterisk. In this article, I’ll show you how to build an VoIP PBX using Astlinux and a Soekris Net4801 single board computer (SBC).

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