Wireless and Wired Networks for Internet Access

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  • 1. Wireless and Wired Networks for Internet Access Blake Dumas Wireless Operations, Interlink Computer Connection Broadband Wireless and Home Networking
  • 2. Part I: Broadband Wireless
  • 3. Definitions
    • LAN - Local Area Network The computers in your home/office
    • WAN - Wide Area Network Your Internet connection and the people around you
    • Downstream throughput
    • The capacity of data you can receive
    • Upstream throughput
        • The capacity of data you can send
  • 4. Internet Access Technologies
    • Dialup/ISDN
    • DSL
    • Cable
    • Wireless
  • 5. Low-Speed Technologies
    • Dial-Up
    • Requires analog phone line to dial provider
    • < 56 Kbps maximum downstream
    • Ties up the phone line
    • ISDN
    • Requires digital phone line to dial provider
    • 64/128 Kbps flavors
  • 6. Traditional Broadband
    • DSL
    • Uses phone lines to deliver high-frequency signal separate from phone conversations
    • Usually 768 kbps – 1.5 Mbps downstream
    • Only reaches 2-3 miles from Central Office
    • Cable
    • Uses cable television infrastructure to deliver broadband
    • Typical 1.5 – 2 Mbps downstream
    • Bandwidth shared among users
  • 7. Wireless Technologies
    • No phone lines or cable television required
    • Farther distances covered
    • Rural areas are able to receive broadband
    • Interference can pose a problem
    0 1 2 3 4 5 GHz Cellular 700-900 MHZ 802.11b/g 2.4-2.48 GHZ 802.11a 5.7-5.8 GHZ 6
  • 8. Interlink Wireless
    • Based on Motorola Canopy technology
    • Operates at 5.7-5.8 GHz
    • Does not require phone lines or cable
    • Persistent connection, no waiting to dial
    • Stationary customer antennas are aimed at access point clusters
    • Limited by line-of-sight
  • 9. Canopy Equipment Internet Access Point Cluster Subscriber Module
  • 10. Technical Aspects
    • Uses Motorola protocol rather than 802.11
    • 5.7 – 5.8 GHz frequency range
    • Dynamic Time Synchronization Spreading (DTSS) and Frequency Shift Keying (FSK)
    • Access Points coordinate times each sender can send
    • Transceiver and antenna integrated into a single module
    • Power and Ethernet delivered on one cable
  • 11. Interlink Wireless Coverage Peoria Itasca Abbott Hillsboro Milford Hubbard Hill County
  • 12. Bandwidth Comparison 56K Dialup ISDN Dual ISDN Res. Wireless Bus. Wireless 500 Kbps 1.0 1.5 2 Mbps Maximum Download Throughput
  • 13. Canopy Security
    • Uses proprietary protocol, unlike 802.11
    • Fragments data into 64-byte packets and reorders
    • Assembly, order, and disassembly of packets remains unpublished
    • Motorola chip not available to the public
    • 64-bit Data Encryption Standard (DES) encryption
  • 14. Part II: Home Networking
  • 15. Single Computer
  • 16. Wired LAN
  • 17. Wireless LAN
  • 18. LAN Hardware
    • Home Router
    • Shares Internet connection among multiple computers
    • Hides your internal network from the world
    • Assigns addresses to computers on the network
    • Can serve as a wireless access point and print server
    Dlink 714+
  • 19. LAN Hardware (cont.)
    • Ethernet Adapters
    • 802.11 Wireless Adapters
    Netgear FA311 Netgear FA511 DLink 520+ Netgear MA401
  • 20.  
  • 21. Residential Wireless Features
    • Persistent “always on” connection
    • 1500 Kbps downstream / 192 Kbps upstream
    • 2 email accounts
    • 10 Mb web storage space
    • Local service and support
    • Equipment lease included in cost
    • Less than the cost of an extra phone line + dialup
    $39.95 / mo. $99 one-time installation
  • 22. Questions?
    • Also, visit our website for more information about wireless and other services we provide
    • www.hillsboro.net