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Sidevõrgud IRT 4060/ IRT 0020 vooruloeng 10 / 17. nov 2004 Võrgusõlmed

Sidevõrgud IRT 4060/ IRT 0020 vooruloeng 10 / 17. nov 2004 Võrgusõlmed. Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. avo.ots@ttu.ee. 10% BsBW. 10% BsBW. 10%BsBW. e2e Tbps throughput. e2e Gbps throughput. e2e kbps t hroughput.

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Sidevõrgud IRT 4060/ IRT 0020 vooruloeng 10 / 17. nov 2004 Võrgusõlmed

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  1. SidevõrgudIRT 4060/ IRT 0020 vooruloeng 10 / 17. nov 2004Võrgusõlmed Avo Otstelekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst.avo.ots@ttu.ee

  2. 10% BsBW 10% BsBW 10%BsBW e2e Tbps throughput e2e Gbps throughput e2e kbps throughput Arvuti- ja kommunikatsioonijõudlus Petascale Computing Capacity Units 10e15 • Pflops • Ebytes Terascale Computing 10e12 • Tflops • Pbytes Gigascale Computing Tbps Backbone • Gflops • Gbytes 10e09 Gbps Backbone 10e06 Mbps Backbone 1995 2000 2005 2010

  3. Võrgurakendused Vajalik ribalaius Pudelikael Switch, Router 10x Võimalik ribalaius Kiud Tihendatud kiud DWDM 100x 128x kiu kohta Infoülekanne Jõudluse kasv kümnendi kestel

  4. Switch

  5. Telephone Network

  6. Võrgukihi kommutaator

  7. PBX Transformation Telephony Server PBX

  8. Reliability Is NT as stable as a proprietary operating system? WAN Why shouldn’t the data network be resilient enough for voice needs? Will management risk reduced service levels for telephony?

  9. johan@abc.se Dear Johan, It’s over. Applications Contact Center Unified Messaging Internet Remote Workers Collaboration

  10. Cost Comparison STM 64 G_Ethernet The costs for Ethernet are often 1/10 of the cost for equivalent ATM or SONET bandwidth

  11. IP PBX Timing Percentage IP/PBX for less than 100 desktops 100 Approximately 308,000 systems in 2004 75 IP/PBX for more than 100 desktops 50 25 12.5 Less than 3,000 systems in 2004 0 1999 2000 2001 2002 2003 2004 2005 2006 Year

  12. What Is VoIP? VoIP = Voice over the Internet Protocol It is not:Voice over the Internet

  13. Echo control Dejittering delay Packet size Header compression Codec Efficiency of transport Voice quality Efficiency & quality

  14. Signal Transfer Point Signal System 7 Data link Trunk Group Loop User - A User - B Central Office - A Transit Office Central Office - B Switching System Connection ThroughSwitching Fabric Switching System

  15. Packet Payload Input Buffer Routing Fabric Header Output Buffer Hdr. Trans Hdr. Trans

  16. ENUM DNS-A (9.1.9.1.e164.arpa) DNS-B (0.5.8.9.1.9.1.e164.arpa) Query 0.0.5.5.0.5.8.9.1.9.1.e164.arpa Query 0.0.5.5.0.5.8.9.1.9.1.e164.arpa Authority = DNS-B Answer = sip:niel@proxy.com proxy.com INVITE INVITE “(919) 850-5500"

  17. VoIP Hype Peak of InflatedExpectations Plateau of Productivity Hype VoIP Slope of Enlightenment Technology Trigger Trough of Disillusionment Type A Adoption Type B Adoption Type C Adoption Maturity

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