Nortel Digital Trunk Interface Cartridge (Refurbished)

(Model # NT7B74AAAA)

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Digital Trunk Interface Cartridge allows for up to 24 digital T1 or ISDN-PRI channels.

Features:

Built-in channel service unit (CSU) supports integrity of digital signaling
RJ48 jack provides interface to T1 network
Core modular ICS can support up to two DTIs for a total of 48 T1 or ISDN-PRI (digital) lines
Compatible with modular ICS KSU only
Requires either services cartridge or combination fiber 6-port services cartridge
ISDN PRI enabler soft key required to configure digital trunk interface cartridge (DTI card) as a PRI card
NOTE: Required for the third T1

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