asterisk ( the open source telephony )
Post on 24-May-2015
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- 1. The Open Source Telephony www.cat-hackers.com
2. 3. Session's Goals
- Main Goals
- What's Asterisk ?
- What benefits me to know about
- Asterisk ?
- How can I use this new technology?
4.
- What are the circumstances that led to
- Asterisk ?
- Enter Asterisk:
-
- - Some basic Voice Over IPconcepts.
- - Some basic telephony concepts.
Session's Goals 5.
- Interactive Voice Response IVRand voice Mail.
- Security Issues.
Session's Goals 6.
- Telephony's Concept
- What's a telephone ?
- For most of us it's nothing morethan a communication device.
- For others,it's a complexelectronic device they cannot livewithout.
7.
- Telephony's Concept
- Telephony is considered highly
- simplisticfrom the user's point of
- view.
- We will know about:
- Central Office ExchangeCOX
- Private Branch Exchange PBX
8.
- Understanding Asterisk
- So , what's a PBX?
- PBX stands for :
- Private Branch eXchange.
- PBXs make connections amongthe internal telephonesof
- a private organization.
9.
- Understanding Asterisk
- The primary advantage of PBXs was cost savings oninternal phone calls.
- How?
10.
- Understanding Asterisk
- By handling the circuit switchinglocally.
- Compare the cost of 3 phonesconnected directly to a COX ,
- and between 3phones connectedto a PBX.
11. 1 2 PBX COX company 12. OldCOX 13.
- Understanding Asterisk
- PBXoriginallyconnectsphones to the PSTN.
- PBX incorporates telephones,fax machines, modems, andmore .
14.
- Understanding Asterisk
- Two developments during the1990s led to new types of PBXsystems.
- The result was developing an
- IP PBX .
15.
- Understanding Asterisk
- The First reason :
- The massive growth of datanetworks.
- The Second reason :
- The understanding of packetswitching.
16.
- Understanding Asterisk
- we can use packets inswitchingdata .
- And we can use them inholdingvoicealso.
- Since Internet isa global delivery system, so it's easy.
17.
- VoIP's Concept
- VoIP allows voice to become nothing more than anotherapplication in the data network.
- We can send and receive voice ,like sending and receivingdata packets .
18.
- Understanding Asterisk
- VoIP PBX supportsVoIP besidesPSTN .
- It can connect IP phone toPSTN phone , and vice versa.
- So,it's linked to both the VoIPprovider and the PSTN Provider.
19. 20.
- Understanding Asterisk
- For a PBX to do it's functionautomatically , there should bea mind controlling it .
- This mind isa software installed on it .
21.
- Understanding Asterisk
- This software or this mind is something like :
- Asterisk
22.
- Understanding Asterisk
- This software will not just routeinward and outward calls.
- It can provide other serviceslike IVR and Voice Mail.
- It acts as a talking human.
23.
- What'sAsterisk ?
- It is basically a software PBX.
- Originally written by MarkSpencer , founder of Digium.
24.
- What'sAsterisk ?
- Open Source Concept.
- Asterisk is an open source,converged telephony platform.
- Asteriskruns on Linux ,
- MAC& BSD.
25.
- What'sAsterisk ?
- With Asterisk , no one istelling you how your phonesystem works.
- Asteriskimposes no limits.
26.
- What'sAsterisk ?
- Asterisksupports the followingboth technologies :
- VoIP .
- PSTN.
27.
- What'sAsterisk ?
- With Asterisk , we can make:
- An IP phone calls a PSTNphone.
- A PSTN phone calls an IPphone .
28.
- What'sAsterisk ?
- PSTN phones in one office calleach other.
- IP phones in one office call eachother.
- An IP connected PC calls an IPor PSTN phone .
29.
- What'sAsterisk ?
- You can makevirtual officesinmany regions that acts as thereal ones .
- You can make a Voice Mail ,and IVR system , thatrespondsinstead of you .
30.
- What'sAsterisk ?
- You can make the caller hears an announcement at specific time Every Monday...
- You canredirectthe caller to another person in another office for consultation.
31. Asterisk PBX Asterisk PBX 32.
- Building Asterisk
- 1- Requirements for the PBX :
- one PC (x86) with a 500 MHzPIII processor.
- some decent amount ofRAM.
33.
- Building Asterisk
- Decent power supply.
- Linux installed Other Unixbased OS s are OK.
- Digiumcards to plug in oursystem to our local PSTN.
34. Digium Cards 35. Building Asterisk 2-Install the system : Like any Linux Distro!. See the Video! See the real system! 36. Building Asterisk 3-Make your configurations! All are GUI windows . 4-Connect your PSTN & IPphones. 5-Connect your fax machines ,your PCs , ... . 37. All is GUI ! 38. IP Phones 39.
- IVR
- IVR is one of the services whichAsterisk supports.
- IVR stands for InteractiveVoice Response .
- IVR is something like :
- Welcome to Telecom Egypt ConductCentre .... !
40.
- IVR
- From theGUI menus, go to Voice Menu .
- You will find more than 17 stepsto configure your IVR system.
- Make your configurations !
41.
- IVR
- You can make the caller enters apassword or not .
- You can make the caller hangedup .
- You can direct the caller toanother person.... .
42. 43.
- IVR
- To make the caller hears acertain message ,just record it.
- Then , form the configurations ,determine the case of thismessage .
44.
- IVR
- You can make the caller hearsthis message on 6 thof October!
- You can set the time for whichthe user replys to your messageby pressing any key.
45. IVR see the video ! 46.
- 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 .
47. Questions? 48. Please Feed Back ! Thanks! www.cat-hackers.com
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