1. Smart Call By
S. Alex Raj
S.Mahesh

2. Intro Present communication Techniques Telephone call Fax E-mail
Postal System
Telegram

3. Drawbacks Cost for the call Separate Infrastructure
Implementation Cost
Cannot be user interactive
Quality of service
Network Problem

4. What is VoIP?
Voice over Internet Protocol (VoIP), is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line. Some VoIP services may only allow you to call other people using the same service, but others may allow you to call anyone who has a telephone number - including local, long distance, mobile, and international numbers

5. Structure of VoIP

6. Specifications Front End Back End Asterisk Soft Phone-3CX
Dialer Script

7. Asterisk
Asterisk is a software implementation of a telephone private branch exchange (PBX)Used in Linux Platform
voice mail,
conference calling,
interactive voice response (phone menus),
automatic call distribution.

8. Asterisk General Architecture

9. Architecture to make local area Connection
HUB
Asterisk Server
End System 1
End System 2
End System 3
End System 4
End System 5
End System 6

10. Process on Making a Call
HUB 4 1 3 2
Asterisk Server
End System
6001
End System
6000

11. This the asterisk Login page

12. To Create New User

13. IP Soft Phone(3cx)

14. Configuring 3cx

15. Extra Features CALL FORWARD ON BUSY CALL FORWARD ON NO ANSWER
CALL FORWARD ON BUSY AND NO ANSWER
FOLLOW ME
REMOTE FOLLOW ME
CALL PICKUP
CALL CONFERENCE
DO NOT DISTRUB
RING GROUP
VIDEO CHAT

16. Ring Group HUB 4 1 2 4 3 End System 6001(B) End System 6000(A)
Asterisk Server
End System
6002(C)

17. Ring Group
Let extensions A, B and C be members of Emergency group. If A dials emergency dialing code (6400), extensions B and C get ring even if any of the extensions has exercised DND facility. When any one of these three extensions answers the call, ring on the remaining extensions will be cut automatically. The code can be set through GUI itself.

18. CALL FORWARD ON BUSY AND NO ANSWER
HUB 6 1 2 4 5 3
End System
6001
End System
6000
Asterisk Server
End System
6002

19. CALL FORWARD ON BUSY
Any Station user can exercise this feature by dialing *143 and an extension number to which calls are to be forwarded when that station is busy. When any call comes to this extension when it is busy, call will be immediately forwarded to the programmed extension.
CANCELLATION PROCEDURE:
Registration of Call Forward on Busy facility can be cancelled by dialing *153.

20. CALL FORWARD ON NO ANSWER
Any Station user can exercise this feature by dialing *243 and an extension number to which calls are to be forwarded when that station is busy. When any call comes to this extension when it is busy, call will be immediately forwarded to the programmed extension.
CANCELLATION PROCEDURE
Registration of Call Forward on Busy facility can be cancelled by dialing *253.

21. CALL FORWARD ON BUSY AND NO ANSWER
Any Station user can exercise this feature by dialing *343 and an extension number to which calls are to be forwarded when that station is busy. When any call comes to this extension when it is busy, call will be immediately forwarded to the programmed extension.
CANCELLATION PROCEDURE
Registration of Call Forward on Busy facility can be cancelled by dialing *353

22. FOLLOW ME HUB 4 1 2 3 End System 6001 End System 6000 Asterisk Server
6002

23. FOLLOW ME REGISTRATION PROCEDURE
Extension A can register ‘follow me’ to extension B by dialing *144 and then extension number of B. If the facility is registered, A gets acceptance tone. Else A gets error tone, If
B has enabled DND
B has enabled ‘follow me’ on A
B is operator
Cancellation Procedure:
Registration of Follow Me facility can be cancelled by dialing *154.

24. REMOTE FOLLOW ME
To enable a station, say A, to be remotely followed, set password from A by dialing *146 followed by a 4 digit password.
Then, to enable this feature at any extension ( say B) which acts as remote for A, dial *145 followed by A's extension number at B. The system will prompt to enter the password. Type the password followed by #.
After enabling, if A receives a call, the call be forwarded to remote extension B.
CANCELLATION PROCEDURE
Registration of Remote Follow Me facility can be cancelled by dialing *155.

25. CALL CONFERENCE 6300 HUB 2 1 4 3 End System 6001(B) End System 6000(A)
Asterisk Server
End System
6002(C)

26. DO NOT DISTURB DND HUB 1 3 2 Asterisk Server End System End System
6001
End System
6000

27. DO NOT DISTURB
Extension A can exercise DND facility by dialing *78. If extension A is enabled for DND, A gets acceptance tone. Extension A gets error tone if
Extension A is disabled for DND
Extension A is programmed as DID extension
Some other extension B has put call forward on extension A.
CANCELLATION PROCEDURE
Registration of Do Not Disturb facility can be cancelled by dialing *79

28. Video Call

29. CALL PICKUP
If extension A is ringing, extension B can pick up the call ringing at A by dialing **. The pick up code can be changed to any desired by editing the “pickupexten” feature in features.conf.

30. Advantages Easily Implemented Free of Cost Open Source User Interface
Quality of Service
No Separate Infrastructure Required
Does not require a private telephone exchange

31. Can Be Also Wireless? Disadvantage Soft phone – Android,Windows
Unique IP
Make Global Calls
Also Implement a costless Telecom service
Disadvantage
Limited IP address
(But When taking IPv6 into account.It is overcomed)

32. Connection Through Wireless Network
Wireless Hub
Asterisk Server
End System 4
End System 5
End System 6
End System 1
End System 2
End System 3

33. Conclusion
World Under one click will become world under one free call