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VoIP

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VoIP-----Voice over Internet Protocol 03 29 58 – PowerPoint PPT presentation

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Title: VoIP


1
VoIP
-----Voice over Internet Protocol
  • 03 ???
  • 29 ???
  • 58 ???

2
????
3
?What Is VoIP? ?The Advantages of VoIP
3 ??? ???Hey Its show time
4
What Is VoIP?
  • Voice over Internet Protocol
  • IP telephony
  • ?IP?????????????

5
How dose VoIP work?
  • ???????????????(packge)
  • ????????
  • (PSTN)????gt????(VoIP)

6
Analog?Digital
7
Origin of VoIP
  • 1995????Vocaltec ????????Internet Phone
  • ???Alon Cohen ?Lior Haramaty

8
(No Transcript)
9
Lior Haramaty
10
Types of VoIP
  • 1.PC to PC Ex
  • 2.PC to Phone
  • 3.Phone to Phone

11
(No Transcript)
12
Why so cheap?
  • ?? P2P ??

????????
?????,?????
?????,?????
13
(No Transcript)
14
The Advantages of VoIP
  • MOBILITY
  • Globalization
  • COST

15
?Disadvantages of VoIP ?VoIP??????????
58 ??? ?? ? ???????????
16
The Disadvantage of VoIP
  • Security
  • Quality
  • Internet connection Power Supply
    Dependency
  • 911 (Emergency Calls)

17
Security
  • Spoken Email
  • Eavesdropping
  • Unauthorized Access
  • Dos (Denial of Service)
  • SIP P2P
  • Commit crimes

SPIT (Spam for Internet Telephony), Spam Call
18
Quality
  • Reasons?
  • And the result
  • Jitter, Packet loss, Echo

19
Internet Connection Power Supply
Dependency
  • Bandwidth dependent
  • The quality of VoIP also has a lot to do with
    your Internet service / bandwidth!
  • Power supply dependency
  • Solution?
  • ?UPS (uninterruptible power supply)

20
911 (Emergency Calls)
  • Regulation has been set up in America
  • FCC (Federal Communication Commission)
  • ?????????
  • E911(enhanced 911)
  • Situation in Taiwan

E911
21
VoIP??????????
  • ?????????
  • ???????????????(?Skype??)
  • ???????????????(?Yahoo!BB??)
  • ?????????

22
?????????
  • ??????? ?????????
  • ????
  • ??????
  • ??????? ????????????????, ????????

23
???????????????(?Skype ??)
  • ????
  • Skype In / Out
  • ????????????

24
???????????????(?Yahoo!BB??)
?Broadband
  • Yahoo!BB???NTT (Nippon Telegraph Telephone
    Crop.)??????
  • Yahoo!BB???

25
?????????
  • 2006-11-01 NCC????????????
  • 070??
  • ???????
  • ?????,????????
  • ??????????
  • ???

26
?Demo ???
29 ??? ?? ? ??????!?!
27
Welcome to the world of VoIP
  • I have always wished that my computer would be as
    easy to use as my telephone. My wish has come
    true. I no longer know how to use my telephone.

  • ---Bjarne Stroustrup,

  • inventor of C language

28
Features of Skype
  • Skype in
  • Skype out
  • Skype zone
  • Conference
  • Voicemail Call forwarding
  • Skypecast, SMS, chat

29
Making A Call
  • Step1??????,???????
  • Step2??????

30
Making A Call
  • Step3????
  • Step4???????????

31
Skype in
  • Step1?????????????

32
Skype in
  • Step2????

33
Skype in
  • Step3??????????
  • Step4?????????????

34
Skype out
  • Step1click Dial
  • Step2??????????????

35
Skype Zone
  • ?????18,000???Skype???????(hot spot)??Skype??????

36
Voicemail Call Forwarding
  • Tools/Voicemail or Call
  • Forwarding or Options

37
Voicemail Call Forwarding
  • Check Forward calls when Im not on Skype
  • Check Send unanswered calls to Skype Voicemail
  • Record your welcoming message

38
Conference
  • Step1click conference
  • Step2Choose conference name
  • Step3Add contacts, 4 people at most

39
Miscellaneous
  • Skypecast
  • SMS
  • Chat (Public, Group)
  • Privacy

40
Price
  • Skype in400/3month or 1200/year, come with
    voicemail
  • Skype out0.677/min in most areas
  • Voicemail 200/3month or 600/year
  • SMS1.5 each
  • Skype zone about 260/month
  • Others FREE

41
Other Providers
  • MSN
  • YAHOO
  • IPBB(??)
  • ??
  • GOGOTALK

42
Conclusion
43
source
  • http//www.ithome.com.tw/
  • http//taiwan.cnet.com/?????
  • http//www.google.com
  • http//www.chihkang.com/voip_01.htm???????
  • http//www.read.com.tw/web/hypage.cgi?HYPAGEsubje
    ct/sub_voip.asp
  • ????????????
  • http//www.skype.com Skype
  • http//www.spectrum.ieee.org/mar05/2538
  • Seven myths about VoIP
  • http//www.wikipedia.org Wikipedia
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