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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1 para centrales telefonicas Open Source Asterisk PBX, (2011), [en linea].
There is an increased requirement for contact center solution in the GCC region and QueueMetrics sets up modern standards in performance measurement, statistics and reporting for call centers based on the Asterisk PBX technology, while WombatDialer is a flexible, easy to use outbound dialing platform and a perfect complement to QueueMetrics.
Since 2004, Loway develops complete, reliable and customizable call center software solutions for the Asterisk PBX.
That carrier grade quality, already obtainable with interface cards by Digium, Sangoma, and other vendors, that include Octasic's OCT6100 echo cancellation device, is now available in software form for small to midsized businesses using an Asterisk PBX.
Used in thousands of call centers worldwide Loway's QueueMetrics sets up modern standards in performance measurement, statistics and reporting for call centers based on the Asterisk PBX technology.
AsteriskNOW is the software appliance and open source distribution of the popular Asterisk PBX featuring a Digium-designed graphical user interface (GUI).
Any business using the free Asterisk PBX software, or other premium PBX solutions, can also boost savings and workforce efficiency with access to high-end features previously only available to large businesses.
We also believe that Xorcom's reliable Asterisk PBX appliances will bring far-reaching benefits to our large base of telephony clients,” said Sandeep Singhania, Technical Director at Lantone Systems.
ISS X-Force has discovered a denial of service vulnerability in the IAX2, which is used by Asterisk PBX to exchange Voice over Internet Protocol (VoIP) and call content.
It also comes with new visual building blocks that provide an intuitive interface to easily execute SQL queries, send email messages and do more, directly from the Asterisk dialplan, and that way directly extends Asterisk PBX capability.
The vulnerability affects Asterisk PBX software versions up to and including v1.