The IAX Protocol at a Glance

This chapter contains sections titled: What Does IAX Stand For? Is IAX Specific to the Asterisk Platform? What is the Difference between IAX2 and IAX? Why another New VoIP Protocol? How Does IAX Solve VoIP Pains? How is Calls Multiplexing Achieved? And What About Demultiplexing? What Port Number Does IAX Use? What Transport Protocol Does IAX Use? Is IAX a Reliable Protocol? How Does IAX Ensure Reliability? Is there an IAX Registration Procedure? Does IAX Registration Differ from SIP Registration? How Are Media Streams Transported in IAX? Is CODEC Negotiation Supported by IAX? Is On‐Fly CODEC Change Possible During a Call? IAX: a Path‐Coupled or Decoupled Protocol? Can IAX be Aware of the Status of the Network Load? What About Security? Could IAX Devices Be Managed? Is Firmware Version Updating Supported by IAX? Can IAX Be Extended to Offer New Features? How is an IAX Resource Identified? What Does an IAX URI Look Like? Is it Possible to Set a Call Involving Several IAX Servers? Is it Possible to Discover the Location of an IAX Resource? What Is DUNDi? What Is TRIP? What Is ENUM? References Further Reading