Asterisk PBX

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Asterisk PBX

Open source PBX software that runs under Linux and other Unix variants on a variety of hardware, including x86, PowerPC, POWER and Xscale. Supporting traditional telephony (TDM) as well as voice over IP (VoIP), Asterisk is written in C and uses the Unix standard POSIX programming interface to communicate with the operating system.

The IAX Protocol
Asterisk uses its proprietary Inter-Asterisk Exchange (IAX) protocol to initiate calls and send the data. Supporting any type of codec, IAX can be used for video as well as VoIP. All signaling and data ride in UDP packets, and IAX can multiplex multiple data streams between servers (port aggregation).

From Digium Et Al
Developed by Mark Spencer of Digium, Inc. (www.digium.com) and maintained by the company along with the Asterisk community (www.asterisk.org), a version for Windows that supported only VoIP was developed as a community project, but "AstWind" was later abandoned. Digium also offers a variety of analog and digital telephony interface cards that plug into PCI slots.
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In 1596, about four years before Twelfth Night was first performed, Sir John Harington published his satirical tract on the flushing toilet, A NEW DISCOVRSE OF A STALE SVBIECT, CALLED THE Metamorphosis of A IAX.
Vpon Which patheticall speech of his, deliuered in that place, the younger men that bare him speciall reuerence, termed the place age akes: which agrees fully in pronunciation, though it may be since, some ill orthographers haue mis-written it, and so now it passeth currant to be spoken and written A IAX.
We are excited to partner with IAX management to accelerate the growth of IAX's market share and profits.
As more fully described in our Current Report on Form 8-K filed on December 15, 2009, on December 14, 2009, the Company entered into an Arrangement Agreement (the "Arrangement Agreement") with IAX Acquisition Corporation, a Delaware corporation ("Parent"), and IAX Canada Acquisition Company Inc.
Currently boasting over two million users, Asterisk supports a wide range of TDM protocols for the handling and transmission of voice over traditional telephony interfaces, featuring VoIP packet protocols such as SIP and IAX among others.
IAX" or the "Company") (NYSE Euronext: IAX), a leading developer and producer of environmentally friendly pet care and industrial products, announced today that it has entered into a definitive arrangement agreement under which an affiliate of Kinderhook Industries LLC has agreed to acquire all of the outstanding common shares of IAX for cash at a price of US$4.
Find out how IAX can complement SIP to overcome complications encountered in current SIP-based communications
An integrated device aimed at the SMB market and including a full-fledged IP-PBX, wireless access point, router, file, e-mail and VPN server, the edgeBOX will come preconfigured with a free trial of Junction Networks' SIP or IAX VoIP trunking and PSTN gateway.
VoIP ready--No extra hardware is necessary to connect to SIP or IAX voice over IP trunks.
Currently boasting over two million servers, Asterisk supports a wide range of TDM protocols for the handling and transmission of voice over traditional telephony interfaces, featuring VoIP packet protocols such as SIP and IAX among others.
Currently boasting over 2 million users, Asterisk supports a wide range of TDM protocols for the handling and transmission of voice over traditional telephony interfaces, featuring VoIP packet protocols such as SIP and IAX among others.