With Asterisk, you can easily build your own multiprotocol VoIP PBX on Linux!
Asterisk is a complete VoIP PBX in software.
It runs on Linux and provides all of the features you would expect
from a PBX and more. Asterisk does Voice Over IP in many protocols,
and can interoperate with almost all standards-based telephony equipment
using relatively inexpensive hardware.
Asterisk provides Voicemail services with Directory, Call Conferencing,
Interactive Voice Response and Call Queuing. It has support for
three-way calling, caller ID services, ADSI, SIP and H.323 (as both
client and gateway). Check the Features section for a more complete
Asterisk needs no additional hardware for Voice Over IP. For interconnection
with digital and analog telephony equipment, Asterisk supports a
number of hardware devices, most notably all of the hardware manufactured
by Asterisk's sponsors, Digium. Digium has single and quad span
T1 and E1 interfaces for interconnection to PRI lines and channel
banks as well as a single port FXO card and a one to four-port modular
FXS and FXO card.
Also supported are the Internet Line Jack and Internet Phone Jack
products from Quicknet.
Here at X100P.com, we offer the Asterisk Community with
Authentic, Original X100P PCI FXO Card, also FXS Analog Telephone
Adapter which speaks the IAX (IAX2) Asterisk native protocol and More!
Asterisk supports a wide range of TDM protocols for the handling
and transmission of voice over traditional telephony interfaces.
Asterisk supports US and European standard signalling types used
in standard business phone systems, allowing it to bridge between
next generation voice-data integrated networks and existing infrastructure.
Asterisk not only supports traditional phone equipment, it enhances
them with additional capabilities.
Using the Inter-Asterisk eXchange (IAX2) Voice over IP protocol,
Asterisk merges voice and data traffic seamlessly across disparate
networks. While using Packet Voice, it is possible to send data
such as URL information and images in-line with voice traffic, allowing
advanced integration of information.
Asterisk provides a central switching core, with four APIs for modular
loading of telephony applications, hardware interfaces, file format
handling, and codecs. It allows for transparent switching between
all supported interfaces, allowing it to tie together a diverse
mixture of telephony systems into a single switching network.
Asterisk is primarily developed on GNU/Linux for x/86. It is known
to compile and run on GNU/Linux for PPC along with OpenBSD, FreeBSD,
and Mac OS X Jaguar. Other platforms and standards-based UNIX-like
operating systems should be reasonably easy to port for anyone with
the time and requisite skill to do so. Asterisk is available in
the testing and unstable Debian archives, maintained thanks to Mark
Who made this?
Asterisk was originally written by Mark Spencer of Digium, Inc.
Code has been contributed from open source coders around the world,
and testing and bug-patches from the community have provided invaluable
aid to the development of this software.