Asterisk is a software implementation of a telephone private branch exchange (PBX); it allows attached telephones to make calls to one another, and to connect to other telephone services, such as the public switched telephone network (PSTN) and Voice over Internet Protocol (VoIP) services. Its name comes from the asterisk symbol, *.
Asterisk is released with a dual license model, using the GNU General Public License (GPL) as a free software license and a proprietary software license to permit licensees to distribute proprietary, unpublished system components.
Asterisk was created in 1999 by Mark Spencer of Digium. Originally designed for Linux, Asterisk runs on a variety of operating systems, including NetBSD, OpenBSD, FreeBSD, Mac OS X, and Solaris. Asterisk is small enough to run in an embedded environment such as Customer-premises equipment-hardware running OpenWrt. There are complete self-contained versions that can boot from a storage device such as a flash drive or external disk drive (preferably IDE/PATA, SATA or mSATA; a USB-connected device can be used, but is often not recommended). A live CD or virtual machine can also be used.
The Times of India | 27 Feb 2021
Blitz | 27 Feb 2021
Stars and Stripes | 27 Feb 2021
Straits Times | 27 Feb 2021
Democratic Underground | 27 Feb 2021
Yahoo Daily News | 27 Feb 2021
The Hill | 27 Feb 2021
AOL | 26 Feb 2021
Beijing News | 27 Feb 2021
ZDNet | 27 Feb 2021
Irish Independent | 27 Feb 2021
Swissinfo | 27 Feb 2021
Belfast Telegraph | 26 Feb 2021
Metro USA | 27 Feb 2021