What is the Nortel Networks NT7B74AA?
The Nortel Networks NT7B74AA is a circuit card / line card, listed by the manufacturer as "DIGITAL TRUNK INTERFACE CARD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Nortel Networks NT7B74AA: a circuit card / line card (DIGITAL TRUNK INTERFACE CARD). Circular Telecom resells surplus and refurbished units of parts like this, helping operators extend network equipment lifecycles and reduce e-waste.
Common Questions
The Nortel Networks NT7B74AA is a circuit card / line card, listed by the manufacturer as "DIGITAL TRUNK INTERFACE CARD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Nortel Networks network equipment, including parts such as the NT7B74AA, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue