This document describes IAX, the Inter-Asterisk eXchange protocol, an application-layer control and media protocol for creating, modifying, and terminating multimedia sessions over Internet Protocol (IP) networks. IAX was developed by the open source community for the Asterisk Private Branch Exchange (PBX) and is targeted primarily at Voice over Internet Protocol (VoIP) call control, but it can...

Recent Voice over Internet Protocol (VoIP) technology is attracting more and more attention and interest in the industry. VoIP applications such as IP telephony systems involve sending voice transmissions as data packets over private or public IP networks as well as reassembled and decoded on the receiving side. Security concerns are always the major barrier that prevents many businesses from e...

One of the most successful WLAN protocols is IEEE 802.11. That is due to the simplicity and robustness against failures of its medium access control protocol. In addition, IEEE introduces the standard 802.11e for quality of service support. However, this standard is not considered efficient when used for some applications that don’t involve data and background in the transmission, but only voic...

This paper describes the development of a user friendly Voice over Internet Protocol (VoIP) monitoring tool. This monitoring tool was developed by using Java Programming and tested on a VoIP network testbed where it uses Session Initiation Protocol (SIP) and Real-time Transport Protocol (RTP) to transmit the voice signal with G.711 modern codec. Quality of Service (QoS) parameters that are bein...

Worldwide Interoperability for Microwave Access (WiMAX) is currently one of the hottest technologies in wireless, it's a standard-based on the IEEE 802. 16 wireless technology that provides high throughput broadband connections over long distance, which supports Point to Multi-point (PMP) broadband wireless access. In parallel, voice Over Internet Protocol is a promising new technology whi...

I nternet telephony, also known as voice over IP, may finally be ready for prime time in 2004. An increasing number of IP telephony providers , traditional phone carriers, and now cable companies—includingage—are offering a growing range of corporate and residential services nationwide. Internet telephony is attractive to customers because it uses lower-cost equipment and is less expensive to o...

Internet telephony and multimedia communication protocols have matured over the last fifteen years. Recently, the web is evolving as a popular platform for everything we do on the Internet including email, text chat, voice calls, discussions, enterprise apps and multi-party collaboration. Unfortunately, there is a disconnect between web and traditional Internet telephony protocols as they have ...