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Norstar Digital Trunk Interface T1 (NT7B74GA , NT7B74AAAA DTI)

by Nortel (NT7B74GA , NT7B74AAAA DTI)

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$125.00 Sale Price:
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Description of the Norstar Digital Trunk Interface T1 (NT7B74GA , NT7B74AAAA DTI)

The Norstar Digital Trunk Interface T1 will provide users with additional 24 digital T1 or IDSN-PRI channel connections.


  • Provides access for up to 24 digital T1 or ISDN-PRI channels
  • Equipped with built-in Channel Service Unit (CSU) functionality to support the integrity of digital signaling
  • Requires either the Services Cartridge of the Combination Fiber 6-Port Services Cartridge
  • ISDN-PRI Soft Key is required in order to configure the Digital Trunk Cartridge as a PRI Card


  • Compatible with MICS 1.0 or higher
  • Core Modular ICS can support up to two DTIs for a total of 48 T1 or ISDN-PRI (digital) lines
  • Off core support of one additional DTI in MICS 5.0 or higher for a total of 72 T1 or ISDN-PRI (digital)lines
Add your recommended phones and accessories!
PRI ISDN Enabler Soft Key Code NTAB2769
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