Document Outline

• AT-MR908TX
  • Installation Manual
• Electrical Safety and Installation Requirements
  • U.S. Federal Communications Commission
  • Canadian Department of Communications
• Table of Contents
  • Chapter1
  • Chapter2
  • Chapter3
  • AppendixA
  • AppendixB
  • AppendixC
  • AppendixD
  • AppendixE
  • AppendixF
  • About This Manual
• 1-800-428-4835 (United States)
• 206-481-3790
• 206-483-7979
• [email protected]
• http://www.alliedtelesyn.com
  • Product Description
    • Network Cascade Expansion
    • Stacked Hub Configuration
    • Figure1: AT-MR908TX Front Panel
    • Table 1: AT-MR908TX Model Types
  • AT-MR908TX-10A
  • Standalone
  • AT-MR908TX-19A
  • Stackable
  • AT-MR908TX-20A
  • Standalone
  • AT-MR908TX-29A
  • Stackable
  • AT-MR908TX-30A
  • Standalone
  • AT-MR908TX-39A
  • Stackable
    • Figure2: Front Panel LEDs
    • Table 2: Front Panel LEDs
  • Power (PWR)
  • Green
  • Lighted: Power on
  • Unlighted: Power off
  • Collision (COL)
  • Amber
  • Lighted: Data collision occurring
  • Link/Activity
  • Green
  • Lighted: Adapter connected to hub
  • Flickering: Data receiving
  • Error
  • Yellow
  • Flashing: Data error occurring
  • Lighted: Partition and isolation of port
  • Utilization
  • Green
  • Hub traffic of the Fast Ethernet bandwidth
  • (1%, 8%, 16%, 32%, 64%)
    • Standalone/Cascade Hub
    • Figure3: AT-MR908TX Back Panel
      • Stackable/Cascade Hub
    • Figure4: Installed AT-MR901 Stacking Module
    • Installation
      • Ventilation
      • Power
        • Table 3: IEEE 802.3 and 802.3u Network Specificati...
  • Media
  • Unshielded/Shielded Twisted Pair Category 3, 4, or...
  • Unshielded/Shielded Twisted Pair Category 5 only
  • Topology
  • Star, Tree
  • Star, Tree
  • External Devices
  • Network Adapter Card Repeater
  • Network Adapter Card Repeater
  • Maximum Segment Length
  • 100 meters (328 feet)
  • 100 meters (328 feet)
    • Table 4: Twisted Pair Cable
  • 1
  • Unshielded Untwisted
  • N/A
  • CCITT
  • None
  • NO!
  • 2
  • Individual UTP
  • 100W ±30W
  • RS232 1BASE5 AT&T PDS
  • None
  • NO!
  • 3
  • Typical Individual UTP
  • 100W ±15W
  • T1, AT&T ISDN 10BASE-T IBM Type 3
  • 3-5
  • NO!
  • 4
  • Enhanced Individual UTP
  • 100W ±30W
  • EIA, TIA 10BASE-T NEMA
  • 5-8
  • NO!
  • 5
  • Individual UTP
  • 100W ±30W
  • EIA, TIA 10BASE-T
  • 8-10
  • YES
  • 6
  • Individual STP
  • 150W ±30W
  • EIA, TIA 10BASE-T
  • 8-10
  • YES
    • Figure5: Standalone Configuration
      • 1. Make sure that the package includes the require...
      • 2. Remove all equipment from the packing box and s...
      • 3. Insert the female end of the power cord into th...
      • 4. Insert the male end of the power cord into an e...
      • 5. Check the front panel of the hub to make sure t...
      • 6. Plug all 100BASE-TX cables into the 100BASE-TX ...
    • Figure6: Standalone AT-MR908TX Back Panel
      • 7. Ensure that the MDI /MDI-X slide switch is set ...
      • 8. Plug the opposite end of each 100BASE-TX cable ...
    • The Two-Repeater Rule
    • Cascaded Installation
      • Figure7: Cascaded Hubs
        • 1. Make sure the package includes all of the requi...
        • 2. Make sure you have the correct cables for the c...
        • 3. Remove each hub to be included in the cascaded ...
        • 4. Arrange each AT-MR908TX hub such that the back ...
        • 5. Insert the female end of the power cord into th...
        • 6. Insert the male end of the power cord into the ...
        • 7. Check the front panels to make sure the green p...
        • 8. As Figure7 illustrates, Port 1 of Hub A is con...
        • 9. Port 1 on the last hub in a sequence of cascade...
        • 10. Double-check the front of each cascaded hub to...
        • 11. Plug all 100BASE-TX cables into the 100BASE-TX...
        • 12. Plug the opposite end of each 100BASE-TX cable...
      • Table 5: Collision Domain Diameters per IEEE Stand...
  • DTE to DTE
  • 100m
  • 412m
  • na
  • na
  • 1 Class I Repeater
  • 200m
  • 272m
  • 231m*
  • 260.8m*
  • 1 Class II Repeater
  • 200m
  • 320m
  • 304m*
  • 308.8m*
  • 2 Class II repeaters
  • 205m
  • 228m
  • 236.3m**
  • 216.2m**
    • Figure8: Stacked Configuration
    • AT-MR901 Stacking Module
      • 1. Ensure that your AT-MR908TX is not connected to...
      • 2. Remove the four screws holding the blank facepl...
      • 3. Slide the AT-MR901 Stacking Module into the bac...
      • Figure9: Installing an AT-MR901 Stacking Module
        • 4. Secure the stacking module in place with the fo...
    • Chassis or Stacking Brackets
      • 1. In a chassis, place up to six AT-MR908TX hubs s...
      • Figure10: Installing Stacking Brackets
        • 2. Attach the power cords of all units.
        • 3. Use the SCSI II cable to connect the OUT port o...
        • 4. Do not match OUT to OUT or IN to IN when connec...
        • 5. Make sure the MDI /MDI-X slide switch on Port 1...
        • 6. Repeat the preceding Steps until you have conne...
        • 7. Check the front of each hub in the stack to mak...
        • 8. Plug all 100BASE-TX cables in the 100BASE-TX ne...
      • Figure11: A Stacked/Cascaded Installation
    • Chapter3
    • Troubleshooting
      • 1. Connect port 1 and port 2 of a single AT-MR908T...
      • 2. Check to make sure the Link/Activity LEDs of bo...
      • 3. After confirming that port 1 and port 2 are ope...
      • 4. Verify the connection in each port by checking ...
      • 5. Once each port of a single AT-MR908TX hub has b...
      • Is the unit receiving power?
      • Is the Link/Activity LED illuminated?
        • 1. Problem 1:
        • 2. Problem 2:
        • 3. Problem 3:
        • 4. Problem 4:
• AT-MR908TX Specifications
  • Table 6: AT-MR908TX Models
• AT-MR908TX-10A
• Standalone
• AT-MR908TX-19A
• Stackable
• AT-MR908TX-20A
• Standalone
• AT-MR908TX-29A
• Stackable
• AT-MR908TX-30A
• Standalone
• AT-MR908TX-39A
• Stackable
  • Figure11: RJ-45 Connector
• Glossary
  • Technical Support Fax Order
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    • Index
      • A
      • B
      • C
      • D
      • E
      • H
      • I
      • L
      • M
      • N
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      • R
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