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Asterisk is a software implementation of a private branch exchange (PBX). In conjunction with suitable telephony hardware interfaces and network applications, Asterisk is used to establish and control telephone calls between telecommunication endpoints such as customary telephone sets, destinations on the public switched telephone network (PSTN) and devices or services on voice over Internet ...
Inter-Asterisk eXchange (IAX) is a communications protocol native to the Asterisk private branch exchange (PBX) software, and is supported by a few other softswitches, PBX systems, and softphones. It is used for transporting voice over IP telephony sessions between servers and to terminal devices.
Inter-Asterisk eXchange (IAX), protocol used between Asterisk PBX instances; Extensible Messaging and Presence Protocol (XMPP), instant messaging, presence information, and contact list maintenance; Jingle, for peer-to-peer session control in XMPP; Skype protocol, proprietary Internet telephony protocol suite based on peer-to-peer architecture
The protocol does not actually carry any calls, but rather provides addressing information. Peers in a DUNDi cluster query other peers for a telephone number to which a call is requested by a user. The result of the query is a dial string for the Asterisk application Dial. The protocol was invented by Mark Spencer, the author of Asterisk.
Creacode SIP Application Server Real-time SIP call controller and IVR product for carrier-class VoIP networks; Dialogic Corporation Powermedia Media Servers, audio and video SIP IVR, media and conferencing servers for Enterprise and Carriers. Dialexia VoIP Softswitches, IP PBX for medium and enterprise organizations, billing servers.
Over 30% of U.S. companies use Voice over Internet Protocol (VoIP) phone systems. Many switch from conventional services to realize the benefits of VoIP, including lower costs, operational ...
Asterisk Gateway Interface (AGI) is a software interface and communications protocol for application level control of selected features of the Asterisk PBX. AGI allows an external, user-written program, launched from the Asterisk dial plan via pipes to control telephony operations on its associated control and voice channels.
The Session Initiation Protocol (SIP) is a signaling protocol used for controlling communication sessions such as Voice over IP telephone calls. SIP is based on request/response transactions, in a similar manner to the Hypertext Transfer Protocol (HTTP).