--- product_id: 11987718 title: "Building Telephony Systems with OpenSIPS 1.6" price: "C$2563" currency: NIO in_stock: true reviews_count: 6 url: https://www.desertcart.ni/products/11987718-building-telephony-systems-with-opensips-1-6 store_origin: NI region: Nicaragua --- # Building Telephony Systems with OpenSIPS 1.6 **Price:** C$2563 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Building Telephony Systems with OpenSIPS 1.6 - **How much does it cost?** C$2563 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/11987718-building-telephony-systems-with-opensips-1-6) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Building Telephony Systems with OpenSIPS 1.6: 9781849510745: Computer Science Books @ desertcart.com Review: the best OpenSIPS book I've seen - It explains the principles of OpenSIPS pretty well. The thing I wish it would do is give examples of full configurations for a variety of scenarios, but there's always the "osipsconfig" utility that installs with OpenSIPS, so maybe we don't need the book to go through it. I guess it's kind of the norm with software books that they don't quite tell you the thing you want to know, or show you the example you want to see. Maybe the authors know something I don't, and there's no such thing as one-size-fits-all examples. Review: Outstanding Reference Material - Its a great read, but more importantly, when your stuck trying to figure something out with the config, you can go back to this and find what you need . ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #7,474,948 in Books ( See Top 100 in Books ) #26,294 in Networking & Cloud Computing #52,607 in Computer Science (Books) | | Customer Reviews | 4.8 4.8 out of 5 stars (7) | | Dimensions | 7.5 x 0.64 x 9.25 inches | | ISBN-10 | 1849510741 | | ISBN-13 | 978-1849510745 | | Item Weight | 1.11 pounds | | Language | English | | Print length | 284 pages | | Publication date | January 20, 2010 | | Publisher | Packt Publishing | ## Images ![Building Telephony Systems with OpenSIPS 1.6 - Image 1](https://m.media-amazon.com/images/I/61K0aWbXfbL.jpg) ![Building Telephony Systems with OpenSIPS 1.6 - Image 2](https://m.media-amazon.com/images/I/714dJXvFfDL.jpg) ![Building Telephony Systems with OpenSIPS 1.6 - Image 3](https://m.media-amazon.com/images/I/311SaV0F89L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ the best OpenSIPS book I've seen *by C***E on June 9, 2014* It explains the principles of OpenSIPS pretty well. The thing I wish it would do is give examples of full configurations for a variety of scenarios, but there's always the "osipsconfig" utility that installs with OpenSIPS, so maybe we don't need the book to go through it. I guess it's kind of the norm with software books that they don't quite tell you the thing you want to know, or show you the example you want to see. Maybe the authors know something I don't, and there's no such thing as one-size-fits-all examples. ### ⭐⭐⭐⭐⭐ Outstanding Reference Material *by G***S on June 15, 2014* Its a great read, but more importantly, when your stuck trying to figure something out with the config, you can go back to this and find what you need . ### ⭐⭐⭐⭐ Great Book on OpenSIPS, But Needs Heavy Editing *by R***S on July 30, 2010* I've been working in the telephony industry for several years now, mainly with Asterisk based systems. My company is currently in need of a SIP proxy to handle load balancing, and least cost routing, so I decided to go with OpenSIPS (which is the most active version of the original OpenSER project today). This book is the best reference on OpenSIPS available (the official documentation on their website is lacking in many regards), and is worth purchasing if you need to learn how to setup and configure OpenSIPS. I'll try to give an honest breakdown of my thoughts on the book. PROS - Contains extremely detailed configuration file directives. This is probably the bulk of the book (snippets of code from the configuration files). This makes the book worth its purchase price. - A great introduction to SIP, which discusses the protocol in an unusually simple manner. - Contains a section on managing OpenSIPS through two different web panels, which is nice for IT people who may need to handle configuration changes from time to time. - Contains a section on LCR, which is obviously extremely important for modern SIP proxies. - Contains a section on billing, which is equally important. Most people setting up SIP proxies are VoIP providers, and need to charge for access. CONS - Lots of typos and grammatical errors. It is obvious that the author is not a native English speaker. While the text was well written, it should have been heavily edited. A lot of the sentences / paragraphs don't make sense, aren't clear, and are confusing. - There is not a good explanation of why configuration directives work the way they do. The author presents valid configuration examples, then just reads off short 1 sentence descriptions of each field. I thought that this could have been written much better, as this is the primary reason most people will purchase the book. Overall, this is a necessary reference for anyone who is using OpenSIPS. It is definitely worth the money, if only for the rather complex configuration samples inside. I hope that the next version of the book has a much more strict review and editing process. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ni/products/11987718-building-telephony-systems-with-opensips-1-6](https://www.desertcart.ni/products/11987718-building-telephony-systems-with-opensips-1-6) --- *Product available on Desertcart Nicaragua* *Store origin: NI* *Last updated: 2026-04-22*