SIP is the most important VoIP protocol and OpenSIPS is clearly the open source leader in VoIP platforms based on pure SIP. The whole telecommunication industry is changing to an IP environment, and telephony in the way we know today will disappear in less than ten years. SIP is the protocol leading this disruptive revolution and it is one of...

Whether you've been successfully hacked already, else...

Need to get up to speed quickly on the latest advances in high performance data converters? Want help choosing the best architecture for your application? With everything you need to know about the key new converter architectures, this guide is for you. It presents basic principles, circuit and system design techniques and associated...

"Today, most email is sent like a postcard. We all should want to put our mail back into secure envelopes again. PGP and GPG are two of the leading tools...

Today, roughly 2 billion people use the internet, and its applications have flourished in number and importance. This volume will examine the growth and geography of the internet from a political economy perspective. Its central motivation is to illustrate that cyberspace does not exist in some aspatial void, but is deeply rooted in national...

• Explore the R language from basic types and data structures to advanced topics
• Learn how to tackle programming problems and explore both functional and object-oriented programming techniques
• Learn how to address the core problems of programming in R and leverage the most popular...