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Supported
hardware
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 Digium®, the creator of
Asterisk®.
Supported
protocols
Asterisk®
supports a wide range of protocols for the
handling and transmission of voice over
traditional telephony interfaces including H.323,
Session Initiation Protocol (SIP), Media Gateway
Control Protocol (MGCP), and Skinny Client Control
Protocol (SCCP).
Using
the Inter-Asterisk eXchange (IAXT) Voice over IP
protocol Asterisk® merges voice and data traffic
seamlessly across disparate networks. The use of
Packet Voice allows Asterisk® 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.
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