Programming the Asterisk open source PBX via the Asterisk Gateway Interface (AGI) is a fun but exasperating exercise for the telephony programmer.

Asterisk bills itself as "the world's leading open source PBX, telephony engine, and telephony applications toolkit." You can use it as the basis of a fully featured, enterprise-class phone system in your organization.

Packt is pleased to announce a new book that helps design and develop VoIP telephony platforms and services through the Asterisk platform. Written by Open Source expert, Kerry Garrison, trixbox CE 2.6 guides users with clear instructions and screenshots to create a complete and cost effective VoIP based telephony system.

Some critics say Asterisk — the open source IP PBX — is for hackers rather than real telephony customers. EUS Networks begs to differ. The New York-based solutions provider, which works closely with Digium, has launched an Asterisk-based IP telephony solution for a hedge fund client’s trading room floors. Here’s the scoop.

This article will present a simple VoIP solution using Asterisk, an open source private branch exchange (PBX) product. It will show you how to install Asterisk, configure it using its LDAP backend, and connect to it using the Ekiga software VoIP client and a Cisco 7900 Series VoIP telephone to make calls.

Voice Internet Protocol (VoIP) Telephony refers to the technology used for making telephone calls over the Internet. The two major technologies used to implement VoIP telephony are Asterisk and OpenSER. This article by Flavio E. Goncalves compares Asterisk and OpenSER topic by topic and shows the differences between them.

Sure, true fanatics are familiar with Asterisk — the open source IP telephony platform. But there are some clear signs that Asterisk is pushing beyond the open source crowd and gaining momentum within small and midsize businesses.

Asterisk is one of the best telephony solutions which is free to use. There are others such as yate that provide same type of solutions and even more custom ones. Due to the easy of implementation Asterisk has become more popular than anything else. Asterisk is very easy to use and lots of open source and closed source panels provide a GUI for it.

The VAR Guy has spent considerable time wondering if — or when — Cisco was going to meld its VoIP platforms with Asterisk, the open source IP telephony platform.