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Chapter 1 Basics Of Information Transmission

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INTRODUCTION TO TELECOMMUNICATIONS
How old is Communications…. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
By Foot
Pigeons NO HACKING
Smoke Signals
Water Channels
Horses
Rail
Postal System
Telephone
 
DIGITAL EXCHANGE
 
Analogue or Digital Data Communications
Information Age ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Collapsing Information Lag huge quantities of information transmitted in a fraction of a second. telegraph Information took days or weeks to be transmitted Information transmitted in minutes or hours Electronic communications sped up the rate of transmission of information, growth of telecommunications and especially computer networks globalization phenomenon (WWW) 1900 1950 2004-9 1850
Datacom Basics Broadband Communications ,[object Object],[object Object],[object Object],[object Object],Data Communications movement of computer information by means of electrical or optical transmission systems convergence
Network Types (based on Scale) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
EXAMPLE OF A NETWORK NMS Karachi STM1 via SMW3 (Singtel) Redundant PIX Firewall Existing Catalyst 4003 Switch Catalyst 6506 Switch NMS E3 via Satellite (Concert) BPX 8680 ATM Switch Redundant PIX Firewall Distribution Router Distribution Router Distribution Router 2xE3 (PDH) + 3xE1(SDH) 3xE3 (PDH) + 3xE1(SDH) 2xE3 SUN E450 SUN E450 SUN E450 E3 SMW3 (EMIX) Distribution Router Distribution Router Core Router E3 Satellite (Simplex) Rawalpindi Lahore Core Router BPX 8680 ATM Switch Core Router E3 Link Fast Ethernet STM1 Link Gigabit Ethernet Legend: S D H E W L E T T P A C K A R D S u r e S t o r e A u t o l o a d e r D L T 7 1 8 S D H E W L E T T P A C K A R D S u r e S t o r e A u t o l o a d e r D L T 7 1 8 BPX 8680 ATM Switch
Protocols

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Chapter 1 Basics Of Information Transmission

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  • 14. Analogue or Digital Data Communications
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  • 16. Collapsing Information Lag huge quantities of information transmitted in a fraction of a second. telegraph Information took days or weeks to be transmitted Information transmitted in minutes or hours Electronic communications sped up the rate of transmission of information, growth of telecommunications and especially computer networks globalization phenomenon (WWW) 1900 1950 2004-9 1850
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  • 19. EXAMPLE OF A NETWORK NMS Karachi STM1 via SMW3 (Singtel) Redundant PIX Firewall Existing Catalyst 4003 Switch Catalyst 6506 Switch NMS E3 via Satellite (Concert) BPX 8680 ATM Switch Redundant PIX Firewall Distribution Router Distribution Router Distribution Router 2xE3 (PDH) + 3xE1(SDH) 3xE3 (PDH) + 3xE1(SDH) 2xE3 SUN E450 SUN E450 SUN E450 E3 SMW3 (EMIX) Distribution Router Distribution Router Core Router E3 Satellite (Simplex) Rawalpindi Lahore Core Router BPX 8680 ATM Switch Core Router E3 Link Fast Ethernet STM1 Link Gigabit Ethernet Legend: S D H E W L E T T P A C K A R D S u r e S t o r e A u t o l o a d e r D L T 7 1 8 S D H E W L E T T P A C K A R D S u r e S t o r e A u t o l o a d e r D L T 7 1 8 BPX 8680 ATM Switch