Building Telephony Systems with OpenSER is a new book from Packt, which acts as a step-by-step guide to building a high performance Telephony System. Written by Flavio E. Goncalves, this book teaches users how to develop a fast and flexible Session Initiation Protocol (SIP) server using OpenSER.

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.

Asterisk is the world's leading open-source PBX, telephony engine, and telephony applications toolkit with immense flexibility. 'Asterisk Gateway Interface 1.4 and 1.6 Programming' book by 'Nir Simionovich' will give you a firm understanding of Asterisk Gateway Interface (AGI) development and proper AGI development practices.

Asterisk is becoming an increasingly popular way for organizations to deploy Voice over IP (VoIP) without making a huge investment in proprietary systems. One of the major hurdles to get over when deploying Asterisk is to learn how the different configuration files work together and how to configure the system to answer phones.

The open source Asterisk VoIP PBX is now at its 1.6.x release -- it's a number that Asterisk is going to stay at for a long time. That's the message that Kevin Fleming, Director of Software Technologies at Digium and co-maintainer of the Asterisk told attendess at the IT360 conference here in Toronto.

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.

Achievement Awards Group, a South African motivational organisation, has implemented Asterisk to upgrade the capability of its specialist call centre and to react quickly to the needs of clients.

Asterisk is an open source VOIP (voice over IP) PBX used to drive telephony systems. The call centre solution was set up by the group's IT partner, Clarotech Consulting.

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.

The first time I ever wrote about the Asterisk open source VoIP PBX was nearly four years ago when the 1.0 milestone was released. I met Asterisk creator Mark Spencer a few months later in Toronto where he delivered a keynote at the VON (Voice on the Net event) of that year.