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Sidevõrgud IRT 4060/ IRT 0020 vooruloeng 10 / 17. nov 2004 Võrgusõlmed. Avo Ots telekommunikatsiooni õppetool, TTÜ raadio- ja sidetehnika inst. [email protected]. 10% BsBW. 10% BsBW. 10%BsBW. e2e Tbps throughput. e2e Gbps throughput. e2e kbps t hroughput. - PowerPoint PPT Presentation
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SidevõrgudIRT 4060/ IRT 0020
vooruloeng 10 / 17. nov 2004Võrgusõlmed
Avo Otstelekommunikatsiooni õppetool,
TTÜ raadio- ja sidetehnika [email protected]
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Capacity Units
1995 2000 2005 2010
•Gflops•Gbytes
•Tflops•Pbytes
•Pflops•Ebytes
10e06
10e09
10e15
10e12
MbpsBackbone
GbpsBackbone
TbpsBackbone
10% BsBW
e2e Tbpsthroughput
e2e Gbpsthroughput
e2e kbpsthroughput
10%BsBW
10% BsBW
Terascale Computing
Gigascale Computing
Petascale Computing
Arvuti- ja kommunikatsioonijõudlus
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Infoülekanne
Võrgurakendused
Vajalik ribalaius
Võimalik ribalaius
KiudTihendatud kiud
DWDM
Switch, Router
128x kiu kohta100x
10x
Pudelikael
Jõudluse kasv kümnendi kestel
4
Switch
5
Telephone Network
6
Võrgukihi kommutaator
PBX Transformation
PBX
Telephony Server
8
Reliability
WAN
Is NT as stable as a
proprietary operating system?
Why shouldn’t the data network be resilient
enough for voice needs?
Will management riskreduced service levels
for telephony?
Contact Center
InternetUnified
Messaging
Collaboration
Applications
Remote Workers
[email protected] Johan,It’s over.
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Cost Comparison STM 64 G_Ethernet
The costs for Ethernet are often 1/10 of the cost for equivalent ATM or SONET bandwidth
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IP PBX Timing
0
12.5
25
50
75
100
1999
Year
Percentage
Less than 3,000 systems in 2004
2000 2001 2002 2003 2004 2005 2006
Approximately 308,000
systems in 2004
IP/PBX for lessthan 100 desktops
IP/PBX for more than 100 desktops
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What Is VoIP?
VoIP = Voice over the Internet Protocol
It is not:Voice over the Internet
Efficiency & quality
Packet Packet size size Codec Codec
Efficiency Efficiency of transport of transport Voice quality Voice quality
Dejittering Dejittering delay delay
Echo Echo control control
Header Header compression compression
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User - A User - B
LoopTrunkGroup
CentralOffice - A
CentralOffice - B
Signal System 7Data link
Signal TransferPoint
TransitOfficeSwitching System
Connection ThroughSwitching Fabric
Switching System
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Header
PacketPayload
Input Buffer
Output Buffer
Hdr. Trans
Hdr. Trans
RoutingFabric
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DNS-B(0.5.8.9.1.9.1.e164.arpa)
DNS-A(9.1.9.1.e164.arpa)
ENUM
proxy.comINVITE
INVITE
Answer = sip:n
iel@pro
xy.com
“(919) 850-5500"
Qu
ery
0.0.
5.5.
0.5.
8.9.
1.9.
1.e1
64.a
rpa
Au
tho
rity
= D
NS
-B
Query 0.0.5.5.0.5.8.9.1.9.1.e164.arp
a
VoIP Hype
VoIP
TechnologyTrigger
Slope ofEnlightenment
Trough of Disillusionment
Plateau ofProductivity
Peak of InflatedExpectations
Hype
Maturity
Type A Adoption
Type B Adoption
Type C Adoption
