Released on: July 2, 2008, 5:22 am

Press Release Author: Packt Publishing

Industry: Telecommunications

Press Release Summary: 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.

Press Release Body: OpenSER is a flexible, free, open-source VoIP server based on
the Session Initiation Protocol (SIP), an application-layer control (or signaling)
protocol for creating, modifying, and terminating sessions with one or more
participants, including internet telephone calls, multimedia distribution, and
multimedia conferences.

Engineered to power IP telephony infrastructures up to large scale, OpenSER is
written in pure C for Linux/Unix-like systems with architecture-specific
optimizations to offer high performance; it is able to handle 4 million users on a
single processor server. The server keeps track of users, sets up VoIP sessions,
relays instant messages, and creates space for new plug-in applications. It can be
used on systems with limited resources as well as on carrier-grade servers, scaling
up to thousands of call setups per second. It is customizable, being able to feature
as fast load balancer; SIP server flavors: registrar, location server, proxy server,
redirect server; gateway to SMS/XMPP; or advanced VoIP application server.

This book is a well illustrated, step-by-step guide to building a SIP based network
using OpenSER. This book is for readers who want to understand how to build a SIP
provider from scratch using OpenSER. Telephony and Linux experience will be helpful
but is not essential. Readers need not have prior knowledge of OpenSER. It shows how
OpenSER can be used to implement features not available in Asterisk PBX.

For more details on the book please visit
http://www.PacktPub.com/building-telephony-systems-with-openser/book.

Web Site: http://www.packtpub.com/building-telephony-systems-with-openser/book

Contact Details: Packt Publishing Ltd
32 Lincoln Road
Birmingham B27 6PA
United Kingdom
T +44 121 683 1170
F +44 121 535 7039

contact@packtpub.com