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Asterisk ( The open source telephony )
 

Asterisk ( The open source telephony )

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    Asterisk ( The open source telephony ) Asterisk ( The open source telephony ) Presentation Transcript

    • The Open Source Telephony www.cat-hackers.com
    •  
    • Session's Goals
      • Main Goals
      • What's “ Asterisk” ?
      • What benefits me to know about
      • “ Asterisk ” ?
      • How can I use this new technology?
      • What are the circumstances that led to
      • “ Asterisk ”?
      • Enter “ Asterisk” :
        • - Some basic “ Voice Over IP “concepts.
      • - Some basic “ telephony “ concepts.
      Session's Goals
      • Interactive Voice Response “ IVR” and “ voice Mail”.
      • Security Issues.
      Session's Goals
      • Telephony's Concept
      • What's a telephone ?
      • For most of us it's nothing more than a communication device.
      • For others,it's a complex electronic device they cannot live without.
      • Telephony's Concept
      • Telephony is considered highly
      • simplistic from the user's point of
      • view.
      • We will know about:
      • “ Central Office Exchange” COX
      • “ Private Branch Exchange” PBX
      • Understanding Asterisk
      • So , what's a PBX?
      • PBX stands for :
      • “ Private Branch eXchange”.
      • PBXs make connections among the internal telephones of
      • a private organization.
      • Understanding Asterisk
      • The primary advantage of PBXs was cost savings on internal phone calls.
      • How?
      • Understanding Asterisk
      • By handling the circuit switching locally.
      • Compare the cost of 3 phones connected directly to a COX ,
      • and between 3phones connected to a PBX.
    • 1 2 PBX COX company
    • “ Old COX”
      • Understanding Asterisk
      • PBX originally connects phones to the PSTN.
      • PBX incorporates telephones, fax machines, modems, and more .
      • Understanding Asterisk
      • Two developments during the 1990s led to new types of PBX systems.
      • The result was developing an
      • “ IP PBX” .
      • Understanding Asterisk
      • The First reason :
      • The massive growth of data networks.
      • The Second reason :
      • The understanding of packet switching.
      • Understanding Asterisk
      • we can use packets in switching data .
      • And we can use them in holding voice also.
      • Since Internet is a global delivery system , so it's easy.
      • VoIP's Concept
      • VoIP allows voice to become nothing more than another application in the data network.
      • We can send and receive voice , like sending and receiving data packets .
      • Understanding Asterisk
      • VoIP PBX supports VoIP besides PSTN .
      • It can connect IP phone to PSTN phone , and vice versa.
      • So,it's linked to both the VoIP provider and the PSTN Provider.
    •  
      • Understanding Asterisk
      • For a PBX to do it's function automatically , there should be a mind controlling it .
      • This mind is a software installed on it .
      • Understanding Asterisk
      • This software or this mind is something like :
      • “ Asterisk”
      • Understanding Asterisk
      • This software will not just route inward and outward calls.
      • It can provide other services like “ IVR “ and “Voice Mail”.
      • It acts as a talking human.
      • What's Asterisk ?
      • It is basically a software PBX.
      • Originally written by “Mark Spencer” , founder of “ Digium”.
      • What's Asterisk ?
      • “ Open Source” Concept.
      • “ Asterisk ” is an open source, converged telephony platform.
      • “ Asterisk” runs on “ Linux” ,
      • ” MAC” & “BSD”.
      • What's Asterisk ?
      • With “ Asterisk” , no one is telling you how your phone system works.
      • “ Asterisk” imposes no limits.
      • What's Asterisk ?
      • “ Asterisk” supports the following both technologies :
      • VoIP .
      • PSTN.
      • What's Asterisk ?
      • With Asterisk , we can make:
      • An IP phone calls a PSTN phone.
      • A PSTN phone calls an IP phone .
      • What's Asterisk ?
      • PSTN phones in one office call each other.
      • IP phones in one office call each other.
      • An IP connected PC calls an IP or PSTN phone .
      • What's Asterisk ?
      • You can make virtual offices in many regions that acts as the real ones .
      • You can make a “ Voice Mail “ , and “ IVR ” system , that responds instead of you .
      • What's Asterisk ?
      • You can make the caller hears an announcement at specific time ”Every Monday..”.
      • You can redirect the caller to another person in another office for consultation.
    • Asterisk PBX Asterisk PBX
      • Building Asterisk
      • 1- Requirements for the PBX :
      • one PC (x86) with a 500 MHz PIII processor.
      • some decent amount of RAM.
      • Building Asterisk
      • Decent power supply.
      • Linux installed” Other Unix based OS s are OK”.
      • Digium cards to plug in our system to our local PSTN.
    • Digium Cards
    • Building Asterisk 2- Install the system : Like any Linux Distro!. See the Video! See the real system!
    • Building Asterisk 3- Make your configurations! All are GUI windows . 4- Connect your PSTN & IP phones. 5- Connect your fax machines , your PCs , ... .
    • All is GUI !
    • IP Phones
      • IVR
      • IVR is one of the services which Asterisk supports.
      • IVR stands for “ Interactive Voice Response ”.
      • IVR is something like :
      • “ Welcome to Telecom Egypt Conduct Centre .... “!
      • IVR
      • From the GUI menus , go to “ Voice Menu” .
      • You will find more than 17 steps to configure your IVR system.
      • Make your configurations !
      • IVR
      • You can make the caller enters a password or not .
      • You can make the caller hanged up .
      • You can direct the caller to another person.... .
    •  
      • IVR
      • To make the caller hears a certain message , just record it .
      • Then , form the configurations , determine the case of this message .
      • IVR
      • You can make the caller hears this message on 6 th of October!
      • You can set the time for which the user replys to your message by pressing any key.
    • IVR see the video !
      • Summary
      • Circuit Switching .
      • PBX and COX.
      • VoIP PBX.
      • Asterisk as a PBX software .
      • What Asterisk Allows us to do .
      • Building a real PBX .
      • How IVR works .
    • Questions?
    • Please Feed Back ! Thanks! www.cat-hackers.com