Voip Think- Voice over IP - Asterisk and SER - SIP IAX and H323

3CX VoIP Phone System, IP PBX for Windows
3CX PBX and Phone System for Windows
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      Asterisk PBX  

     
        Introduction   linux installation   windows installation   first steps   sip.conf   extensions.conf   voicemail.conf    
     

     
    ¿What is Asterisk? - Asterisk introduction

    Asterisk is an open-source software implementation of a PBX (Private branch exchange). Like any PBX, it allows a number of attached telephones to make calls to one another, and to connect to other telephone services including the PSTN, ISDN or to a VoIP provider.

    The name Asterisk refers to the “*” symbol which is a “wildcard” in Unix and DOS command line syntax, denoting a symbol of a very versatile component in a voice network. Allowing multiple packet voice protocols to interact, and offering a modular design with APIs for adding new applications have made Asterisk a real wildcard in converged telecommunications.

    Asterisk has GPL license. Mark Spencer from Digium originally created Asterisk and remains its primary maintainer, although other programmers have contributed with new features and functionalities and have reported bugs. Originally designed for the Linux operating system, Asterisk now also runs on OpenBSD, FreeBSD, Mac OS X, Sun Solaris, and Microsoft Windows, although as the "native" platform, Linux is the best-supported of these.

    Asterisk is an open source converged telecommunications platform, designed to allow different types of IP telephony hardware, middleware, and software to interface with each other consistently. It provides multiple layers, managing both TDM and packet voice at lower layers while offering a highly flexible platform for PBX and telephony applications such as IVR. Asterisk can bridge and translate different types of VoIP protocols like SIP, MGCP, and H.323. At the same time it can provide a full-featured server platform for predictive dialing, custom IVR, remote and central office PBX, and conferencing.

    By supporting a mix of traditional and VoIP telephony services, Asterisk allows deployers to build new telephone systems efficiently, or gradually migrate existing systems to new technologies. Some sites are using Asterisk servers to replace aging proprietary PBXes; others to provide additional features (such as voice mail or phone menus) or to cut costs by carrying long-distance calls over the Internet

     

     
     
     
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