By Mohamed Boucadair(auth.), David Hutchison, Serge Fdida, Joe Sventek(eds.)
Find out how IAX can supplement SIP to beat problems encountered in present SIP-based communications
Written via knowledgeable within the box of telecommunications, this publication describes the Inter-Asterisk alternate protocol (IAX) and its operations, discussing the most features of the protocol together with NAT traversal, safeguard, IPv6 aid, interworking among IPv4 and IPv6, interworking with SIP and so forth. the writer provides the ways that IAX may be activated in order to steer clear of issues akin to NAT and the presence of middleman containers in operational architectures. This e-book analytically demonstrates the extra values of IAX protocol in comparison to current ones, whereas presenting plausible deployment eventualities that verify the habit of the protocol in operational networks.
Key Features:
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Promotes a achievable substitute protocol to ease deployment of multimedia servicesContent:
Chapter 1 advent (pages 1–10):
Chapter 2 The IAX Protocol at a look (pages 11–16):
Chapter three IAX Uniform source Identifier (pages 19–33):
Chapter four IAX Frames (pages 35–46):
Chapter five IAX info components (pages 47–66):
Chapter 6 IAX Messages (pages 67–78):
Chapter 7 IAX Connectivity concerns (pages 79–87):
Chapter eight IAX Operations (pages 89–101):
Chapter nine IAX and complex companies (pages 105–116):
Chapter 10 Multi?IAX Servers atmosphere (pages 117–132):
Chapter eleven IAX and NAT Traversal (pages 133–153):
Chapter 12 IAX and Peer?to?Peer Deployment eventualities (pages 155–167):
Chapter thirteen IAX and IPv6 (pages 169–190):
Chapter 14 IAX: in the direction of a light-weight SBC? (pages 191–204):
Chapter 15 situations for the Deployment of IAX?Based Conversational providers (pages 207–221):
Chapter sixteen IAX within the entry section of SIP?Based carrier Architectures (pages 223–238):
Chapter 17 Validation situation (pages 239–247):
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Additional resources for Inter-Asterisk Exchange (IAX): Deployment Scenarios in SIP-Enabled Networks
Sample text
If set to 1, this is a retransmitted frame if set to 0, this frame is beingsent for the first time. Destination Call Number: this field stores the identifier assigned by the remote IAX peer to identify a given call on its side. This number has to be set to the same value as the one enclosed as Source Call Number, conveyed in IAX frames issued by the remote IAX peer within the same call. The length of this field is 15 bits. Time-stamp: this field is used to convey an incremental representation of the number of milliseconds since the first transmission within the context of this call.
Com. The port number to be used to initiate an IAX session is the IAX default port number, 4569. com. The port number to be used to initiate an IAX session is the IAX default port number, 4569. com. The UDP port to be used in the context of an IAX session destined to this IAX resource is 4569. 36. The port number to be used is 4569. Unlike in the previous example, a context is associated with this resource. Indeed, the context of this IAX resource is work. This means that invoking this resource may be conditioned by the value of the context in which an IAX session might occur.
This destination is attached to an SIP-based telephony service providers domain. 2 Using ENUM to place a call In this example, a SIP-enabled service is offered, owing to a deployment of a server denoted as Proxy Server. The interconnection between the PSTN and SIP realms is implemented using a dedicated node called Gateway. We assume that ENUM service is invoked by the interconnection node itself and not by the SIP proxy server. A DNS server, which is used to retrieve the IP addresses of SIP servers, is also deployed.