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DEFINITY Made Easy Tools
Issue 3, December 2001



Option Switch Settings

TN464/2464 Option Settings

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The TN464/2464 DS1/E1 Interface-T1/E1 circuit pack interfaces between a 24 or 32 channel CO/ISDN or tie trunk and the Time Division Multiplexing (TDM) bus.

Set the switches on the circuit pack to select bit rate and impedance match. See Option Switch Settings on TN464/2464 and TN464/2464 Option Settings.

Option Switch Settings on TN464/2464

120 ohms

Twisted pair

  75 ohms

Coaxial requiring 888A adapter

  32 channel

2.048 Mbps

  24 channel

1.544 Mbps

TN464/2464 Option Settings

Figure Notes:
      1. Backplane Connectors

      2. 24/32-Channel Selector

      3. 75/120-ohm Selector

      4. Faceplate

      5. 32 Channel

      6. 120 ohm (shown selected)

      7. 24 Channel (shown selected)

      8. 75 ohm

      9. Connector

      10. TN464/2464

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