Lecture Series on Digital Voice and Picture Communication by Prof.S. Sengupta, Department of Electronics and Electrical Communication Engg ,IIT Kharagpur . For more details on NPTEL visit nptel.iitm.ac.in
Anyone who is old enough to remember making long distance phone calls 30 years ago would also agree that telephone communication has changed considerably over the past three decades. Certainly the introduction and mass adoption of the cellphone has changed voice communication immeasurably. But there is a new revolution going on in landline communication [...]
VoIP stands for Voice over Internet Protocol. It is the science behind transmitting audio over the Internet in the form of data Packets. During VoIP’S inception, people were concerned about the quality of Audio being transmitted over the Internet. Since its development, VoIP and audio Codecs have improved greatly. To get the most out of [...]
Product DescriptionThis book explains why people and companies are converting some or all of their existing (legacy) telephone systems from dedicated telephone systems (such as proprietary PBX) to more standard IP telephony systems. These conversions allow for telephone bill cost reduction, increased ability to control telephone services, and the addition of new telephone information services. [...]