Chapter 1 Overview
1.1 What is Asterisk
The Definition of Asterisk is described as follows:
Asterisk is a complete PBX in software. It runs on Linux, BSD, Windows
(emulated) and provides all of the features you would expect from a PBX
and more. Asterisk does voice over IP in four protocols, and can
interoperate with almost all standard-based telephony equipments using
relatively cost-effective hardware. Asterisk provides Voicemail services
with Directory, Call Conferencing, Interactive Voice Response, and Call
Queuing. It supports three-way calling, caller ID services, ADSI, IAX,
SIP, H323 (as both client and gateway), MGCP (call manager only) and
SCCP/Skinny (voip-info.org).
SIP phone
Switch
PC+Softphone
OpenVox Communication Co. LTD.
B200P/BE200P on DAHDI User Manual
Operating System Linux and FreeBSD
OpenSource Drivers Asterisk®,DAHDI,
Zaptel,Bristuff,Misdn and ISDN4BSD
Protocol SIP, IAX, SS7, MGCP, H323, R2 and more..
Applications IVR, CRM, FAX, E-mail, CallCenter, Billing
and your application..
Asterisk
VOIP PBX
Analog phone
Figure 1 Topology
URL: www.openvox.cn
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