To retrieve relevant information on a mobile phone without having to open up a web browser is not only easier but also efficient in time-constraint situations. To achieve this, we implemented an Interactive Voice Response System (IVRS) for SIP-based phones. This book aims to propose a cost-effective IVR system using a simple PC without having to set up a physical PBX. Telecommunication services play an important role in exchange of information and communication. Although this system is limited to SIP-based phones, in this book we propose a general IVRS that can be implemented for a regular...

The outdoor positioning system using GPS is well established and has been adopted throughout the world. We have various applications on our smartphones like Google Maps Navigation where we can easily find a pathway to our destination or find nearby restaurants, tourist attractions and many more. However, indoor positioning system is not so well established. Research work are going on, but bringing out its pragmatic nature has not yet got success on a large scale. At few places, indoor navigation system has been deployed but it is limited to private use. It is not yet made public because of...