INTRODUCTION TO TELECOMMUNICATIONS
How old is Communications…. <ul><li>By Foot </li></ul><ul><li>Pigeons </li></ul><ul><li>Smoke Signals </li></ul><ul><li>Wa...
By Foot
Pigeons NO HACKING
Smoke Signals
Water Channels
Horses
Rail
Postal System
Telephone
 
DIGITAL EXCHANGE
 
Analogue or Digital Data Communications
Information Age <ul><li>First Industrial Revolution </li></ul><ul><ul><li>Introduction of machinery </li></ul></ul><ul><ul...
Collapsing Information Lag huge quantities of information transmitted in a fraction of a second. telegraph Information too...
Datacom Basics Broadband Communications <ul><li>Telecommunications </li></ul><ul><li>transmission of voice, video, data,  ...
Network Types (based on Scale)   <ul><li>Local Area Networks (LANs) - room, building </li></ul><ul><ul><li>a group of PCs ...
EXAMPLE OF A NETWORK NMS Karachi STM1 via SMW3 (Singtel) Redundant PIX Firewall Existing Catalyst 4003 Switch Catalyst 650...
Protocols
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Chapter 1 Basics Of Information Transmission

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Chapter 1 Basics Of Information Transmission

  1. 1. INTRODUCTION TO TELECOMMUNICATIONS
  2. 2. How old is Communications…. <ul><li>By Foot </li></ul><ul><li>Pigeons </li></ul><ul><li>Smoke Signals </li></ul><ul><li>Water Channels </li></ul><ul><li>Horses </li></ul><ul><li>Rail </li></ul><ul><li>Postal System </li></ul><ul><li>Telephone </li></ul><ul><li>Data Communications </li></ul>
  3. 3. By Foot
  4. 4. Pigeons NO HACKING
  5. 5. Smoke Signals
  6. 6. Water Channels
  7. 7. Horses
  8. 8. Rail
  9. 9. Postal System
  10. 10. Telephone
  11. 12. DIGITAL EXCHANGE
  12. 14. Analogue or Digital Data Communications
  13. 15. Information Age <ul><li>First Industrial Revolution </li></ul><ul><ul><li>Introduction of machinery </li></ul></ul><ul><ul><li>Changed the way people worked </li></ul></ul><ul><li>Second Industrial Revolution – Information Age </li></ul><ul><ul><li>Introduction of computers </li></ul></ul><ul><ul><li>Introduction of networking and data communication </li></ul></ul><ul><ul><li>Changed the way people worked </li></ul></ul><ul><ul><ul><li>Faster communication  Collapsing Information lag </li></ul></ul></ul><ul><ul><ul><li>Brought people together  Globalization </li></ul></ul></ul>
  14. 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
  15. 17. Datacom Basics Broadband Communications <ul><li>Telecommunications </li></ul><ul><li>transmission of voice, video, data, </li></ul><ul><li>imply longer distances </li></ul><ul><li>- broader term </li></ul>Data Communications movement of computer information by means of electrical or optical transmission systems convergence
  16. 18. Network Types (based on Scale) <ul><li>Local Area Networks (LANs) - room, building </li></ul><ul><ul><li>a group of PCs that share a circuit. </li></ul></ul><ul><li>Backbone Networks - less than few kms </li></ul><ul><ul><li>a high speed backbone linking the LANs at various locations. </li></ul></ul><ul><li>Metropolitan Area Networks (MAN) - (< few 10 kms) </li></ul><ul><ul><li>connects LANs and BNs at different locations </li></ul></ul><ul><ul><li>leased lines or other services used to transmit data. </li></ul></ul><ul><li>Wide Area Networks (WANs) - (> few 10 kms) </li></ul><ul><ul><li>Same as MAN except wider scale </li></ul></ul>
  17. 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
  18. 20. Protocols

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