Inter-Asterisk Exchange (IAX) is a protocol designed to facilitate the control and transmission of streaming media over IP-based networks. While IAX can be applied to various types of streaming media, including video, its primary focus is on the management of IP voice calls, commonly known as Voice over IP (VoIP).
Key characteristics and aspects of IAX include:
- Open Source: IAX is an open-source initiative, making its specifications and implementations freely available. It serves as an alternative to other protocols like SIP (Session Initiation Protocol) for IP-based communication.
- Bandwidth Efficiency: One of the central design goals of the IAX protocol is to minimize bandwidth usage for both control signaling and media transmission. This emphasis on bandwidth efficiency is particularly important for individual voice calls, where conserving network resources is critical.
- IAX Version 2 (IAX2): The most widely used version of the IAX protocol is IAX2, which represents the second iteration of the protocol. IAX2 builds upon the foundation of the original IAX to offer improved features and capabilities for IP-based communication.
In summary, IAX is a protocol designed for IP-based communication, with a primary focus on IP voice calls or VoIP. It is characterized by its open-source nature, bandwidth efficiency, and the availability of IAX2 as the current version. IAX is often used as an alternative to other protocols like SIP, offering flexibility and resource optimization for communication over IP networks.