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Building Telephony Systems with OpenSIPS 1.6

Thanks to Flavio E. Goncalves, a new edition of "Building Telephony Systems with OpenSIPS" is available. It covers the latest stable release, the OpenSIPS 1.6, updating existing topics (NAT traversal, accounting, etc), but also approaching new 1.6 specific technologies (data caching, dialogs, etc).

The book will teach you ho to build scalable and robust telephony systems using SIP

• Build a VoIP Provider based on the SIP Protocol
• Cater to scores of subscribers efficiently with a robust telephony system based in pure SIP
• Gain a competitive edge using the most scalable VoIP technology
• Learn how to avoid pitfalls using precise billing
• Packed with rich practical examples and case studies on the latest OpenSIPS version 1.6

http://www.packtpub.com/building-telephony-systems-with-opensips-1-6/book