1. Presenter:
Nisar Ahmed Memon
Muhammad Muzzamil Shaikh
Aslam Dall

2. Introduction
Problems & Solution
Equipment Used
System Block Diagram
Working Process
Advantages
Results
Application
Conclusion
Future Work
References

3. •
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Build unified communications system (real and non real time)
Open source software platform Elastix Server
Asterisk PBX as the kernel
Portability, Cost effective solution and Flexibility
Integration of hardware and software
Android supported handhelds with the wireless network
PCs connected with both wired LAN and wireless LAN
To design IP based PBX network architectures
To customize efficient and effective Soft Switch
To implement real time and non-real time applications
Design Global network by joining small IP based PBX
Integrate Analog Phone and configure these phone

4. • Higher charges of calling with respect to distance.
• Dedicated line required to complete a call
• Limited scalability
• Separate Wiring System
• Limited Mobility of users
• Less Features at a Higher Price
• No database

5. IP PBX
Internet Protocol Private Branch
Exchange

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Voice call
Video call
Voice mail
Voicemail to E-mail
Follow me
IVR
Database system
Easy Network Management

7. PBX
IP-PBX
Separate Wiring system
Use LAN
Higher operational cost
Lower operational costs
Difficult to configure
Easy to configure
Complex Management
Simpler Management
Less Features
More Features
Classical and No Future
Future Development
Uses a separate infrastructure
Integrates into Data Network

8. Hardware
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PC server
HTC android
Analog telephone
Access Point
A400E+1FXO
Laptop
Software
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Elastix
Wireshark
3cx phone
Openfire

10. Soft
Phones
Analog
Phone
ATA
Server
(Elastix)
IP
Phone
Smart
Phone

11. • Customization Of server
• Configuration
– 3CX Soft Phone on PC
– 3CX Soft Phone on android HTC
– SIP Account
– Voice Call
– Video call
– Voice mail
– IVR(Interactive Voice Response)

12. •
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No Charges of calling with respect to distance.
No Dedicated line required to complete a call
Great Scalability
No Separate Wiring System
Great Mobility of users
Great Features at a Zero Price
Database

13. Packet Loss Analogue Phone
1
0.8
P
a
c
k
e
t
0.6
0
0.4
0.2
0
18
38
42
45
58
Total Packet
77
85
88
333
%

14. Packet Loss IP Phone
1
P
a
c
k
e
t
0.8
0.6
0.4
0 1%
0.2
0
6
17
22
48
52
59
69
91
107
119
148
573
Total Packet
Packet Loss Softphone Mobile
1.2
P
a
c
k
e
t
1
0.8
0.6
0.4
0 1%
0.2
0
3
14
23
38
39
46
80
Total Packet
85
89
92
420

15. • Education
• Banks
• Corporate Organization
• Business Sector
• Hotels
• Hospitals

16. • This model can be implemented in the university campus to
provide free voice and video calls.
• The service is secured and allows only the registered user to
place calls.
• Quality of Service is not good while communicating phone to
any SIP phone,
Server Capacity
User Capacity
Bandwidth
Codec

17. •Integration with PSTN Network
•Integration with GSM Network
•Integration with others Unified
Communication Systems
•Communication without side SIP network
•Telephony Interface Cards
•High security for large scale enterprise
network

18. Van Meggelen J., Smith J., Madsen L."Asterisk: The Future of Telephony".2nd ed. O’Reilly
Media, p.608,2007.
Li Jian, Li Wei, Unified communication and standardization, Telecommunications Network
Technology,2009,(07)
Andre du Toit (1992). Private PBX Networks: Cost Effective Communication Solutions in Proc IEEE
3rd AFRICON conference
[Montoro, P. and Casilari, E. (2009). A comparative study of VoIP standards with Asterisk. In
Proceedings of the 4th International Conference on Digital Telecommunications, pages 1–
6, Colmar, France.