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Networking

Networking. Hardware and Physical Media. Type of Networks. Voice Networks DS-0 based DS-1based Data Networks DS-0 based DS-1 based DS-3 based SONET Ethernet. Voice Networks. Requires Switches Circuit based switch – DMS or AT&T Packet based switch - SONUS

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Networking

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  1. Networking Hardware and Physical Media

  2. Type of Networks • Voice Networks • DS-0 based • DS-1based • Data Networks • DS-0 based • DS-1 based • DS-3 based • SONET • Ethernet

  3. Voice Networks • Requires Switches • Circuit based switch – DMS or AT&T • Packet based switch - SONUS • Usually based around wire serving center or local metro network. • Typically served via copper (twisted pair) • Typical Digital Hierarchy rates of • DS-0 64 kbps • DS-1 1.544 mbps

  4. Data Networks • Requires Routers, Switches and Hubs • No Boundaries – LAN or WAN • Packet based networks – Ethernet • LAN physical media • Twisted pair • Multi Mode Fiber • Can be coax • 10base500 • 10base 200 • Token Ring

  5. Data Networks • WAN Physical media • Twisted pair • Multi mode fiber • Single mode fiber • Typical Digital Hierarchy Rates • DS-0 56/64 kbps • DS-1 1.544 mbps • DS-3 44.736 mbps • SONET 51.84 mbps to 9.953 gbps

  6. Digital Hierarchy • DS-0 64 kbps • DS-1 1.544 mbps 24 DS-0 • DS-2 6.312 mbps 4 DS-1 • 96 DS-0 • DS-3 44.736 mbps 28 DS-1 • 674 DS-0 • DS-4 274.176 mbps 168 DS-1 • 4032 DS-0

  7. SONET Rates • OC-1 51.84 mbps 1 DS-3 • OC-3 155.52 mbps 3 DS-3 • OC-9 466.56 mbps 9 DS-3 • OC-12 622.08 mbps 12 DS-3 • OC-24 1.244 gbps 24 DS-3 • OC-36 1.866 gbps 36 DS-3 • OC-48 2.488 gbps 48 DS-3 • OC-96 4.976 gbps 96 DS-3 • OC 192 9.953 gbps 193 DS-3

  8. DWDM • Dense Wave Division Multiplexing • Supports between 8 and 40 wavelengths • Also referred to as windows • Carrying capacity of each wavelength • OC 192 • Total current capacity • 40 x 192 = 7680 DS-3 = 5,160,960 DS-0 • Rates ever evolving • 80 windows and OC 768 39.813 gbps

  9. XO Network Hardware • Switch – DMS 500 • Combination of two switch one front end • DMS 100 – local switch • DMS 250 – toll switch • SONUS • Soft switch • Packet based switch • Remote node only – processing done in Dallas • Tellabs DACS • Titan 5500 3/1 dacs • Titan 532L 3/1/0 dacs

  10. XO Network Hardware • SONET • Nortel Classic OC-48 and OC-12 • Nortel Optera 3500 • Cisco 15454 • Positron OC-3 and OC-12

  11. XO Data Network Hardware • Juniper M40 • Cisco 12000 – DS-3 and above customers • Redstone - DS-1 and below • ATM network • DSLAM • SDSL • IDSL • ADSL

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