the whole world can talk for free

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the whole world can talk for free. B94705006 陳陳陳 B94705016 陳陳陳 B94705022 陳陳陳

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the whole world can talk for free. B94705006 陳彥琦 B94705016 王維新 B94705022 呂明龍. What(1/5). What’s skype? . A free VoIP (Voice over Internet Protocol, VoIP) network P2P connection. What can it do?. Phone over Internet Conference call Call regular phones Instant Message. What(2/5). - PowerPoint PPT Presentation

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Page 1: the whole world can talk for free

the whole world can talk for free.

B94705006 陳彥琦B94705016 王維新B94705022 呂明龍

Page 2: the whole world can talk for free

What(1/5)

What can it do?

A free VoIP (Voice over Internet Protocol, VoIP) network P2P connection

Phone over Internet Conference call Call regular phones Instant Message

What’s skype?

Page 3: the whole world can talk for free

What(2/5)

What does it look like? Contact list

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What(3/5)

What does it look like? Instant Message

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What(4/5)

What does it look like? Calling Contacts

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What(5/5)

What else can it do ? P2P file transfer Voice message Contact list as long as you like Traverses Symmetric NATs and firewalls

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Why(1/2)

Why Skype was created? “The idea of charging for calls belongs to the last century. Skype software gives people new power to affordably stay in touch with their friends and family by taking advantage of their technology and connectivity investments.”

Niklas Zennström, CEO & Co-founder of Skype

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Why(2/2)

Why eBay agreed to buy Skype Technologies in a $US2.6bn deal?

Why there’re more than 3000,000 users using Skype?

Why Google Talk adopts the same audio core as Skype?

Page 9: the whole world can talk for free

Skype 年表2003/08/29 Skype beta 釋出2003/10/22 Skype Users Online 在 51 天內超過十萬人2004/02/23 Skype 釋出新功能:最多 5 人同時交談2004/04/06 釋出 Pocket PC 用 Skype 版本2004/06/21 釋出 Linux 用 Skype 版本2004/07/23 與 COLT, iBasis, Level 3, Teleglobe 簽約2004/07/27 新服務: SkypeOut2004/08/31 釋出 Mac OS X 用 Skype 版本2004/10/20 Users 超過 1,000,000 人2004/10/28 與 Guillemot 簽約2004/11/09 釋出 Skype API beta

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2004/11/18 與 Logitech 發表合作聲明2004/11/22 與 RTX Telecom 簽約2004/12/01 與 Plantronics , CDC 合作2005/01/19 與 PChome Online 合作2005/01/21 與 Daum Implement 合作2005/02/06 與 HGC 合作2005/02/10 與 i-mate 合作2005/02/14 與 Motorola 合作2005/02/16 與 Xandros 合作2005/03/11 1,000,000 個 SkypeOut Users2005/04/15 SkypeIn and Skype Voicemail beta launched

Skype 年表

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2005/05/06 Skype Wins 2005 Webby Award for Telecommunications2005/05/11 與 Fiberlink 合作2005/06/13 Skype Voicemail and Windows v1.3 Launched2005/06/22 與 ValueCommerce 合作2005/06/22 與 Onet 合作2005/07/18 與 The Cloud 合作2005/09/01 宣佈與第一家行動電信業者 E-Plus 簽署 合作協議2005/09/08 Skype Launches Its Voice Services Program

Skype 年表

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2005/09/12 PChome 12 日宣布成立設計研發 Skype 周邊的硬體公司 IPEVO ,並推出首支同名的 IP 電話產品 IPEVO free.1

2005/09/12 eBay將以 13億美元現金搭配 13億美元股票買下這家全球通訊廠商。若Skype在 2008年能達成某些財務目標,則 eBay還會額外奉上 15億美元,因此 eBay收購總額相當於超過 40億美元。

Skype 年表

Page 13: the whole world can talk for free

特殊記事 2005/08 美國聯邦政府將贊助 George Mason 大學研究員開發的一款原型監聽工具,據說可追蹤網際網路電話的交談雙方。研究員表示,他們的研究計畫旨在協助警方辨認,監控中的嫌犯是否透過網路電話 (voice over Internet Protocol ;

VoIP) 互相傳遞訊息。透過 VoIP 祕密通話,目前無從追蹤起。研究員說,他們的竊聽技術已證明可與 Skype搭配。

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Skype 圖示演變

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Skype 實際操作1. 登入 skype2. 搜索聯絡人3. 新增聯絡人4. 線上通話5. 即時訊息6. 傳送檔案7. 多方通話

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1. 登入 Skype使用現有的帳號或註冊新的帳號填入基本資料

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2.and3. 搜尋及新增聯絡人

搜尋其他用戶找到後可新增至聯絡人

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4. 線上通話選定聯絡人並按下下方的通話鍵

接通後即可開始交談

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5. 即時訊息6. 傳送檔案

就如同 MSN 一般開始交談

選定檔案即可送出

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7. 多方通話

選擇聯絡人 => 加入

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聯絡人選取結束 => 開始通話

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Who should use SKYPE?

辦公室洽公商業行為閒話家常

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Is that ALL?

加值服務 - SkypeIN - SkypeOUT - SkypeVM 語音信箱 -來電轉接

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Is that ALL?

Plug-in( 外掛 ) - Pamela 語音答錄 - vSkype 視訊外掛

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P2P ?? P2P(Peer-to peer, P2P)

Pure P2P -No central server. Hybrid P2P -Has a central server that keeps info. Mixed P2P -Has both pure and hybrid characteristics.

“A TRUE P2P system is one where all nodes in a network join together dynamically to participate in traffic routing-, processing- and bandwidth intensive tasks that would otherwise be handled by central servers.” -Skype.com

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P2P ??

http://www.open-files.com/redac/redac_open-files_com/Kademlia/P2P-Kad.jpghttp://academy.smc.edu/et12/s2005/overview/internet_diagram.gif