What is the Nortel Networks NTN839AA?
The Nortel Networks NTN839AA is a network/telecom equipment component, listed by the manufacturer as "DS3/E3/EC1 I/O MOD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

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Part Overview
Nortel Networks NTN839AA: a network/telecom equipment component (DS3/E3/EC1 I/O MOD). 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 NTN839AA is a network/telecom equipment component, listed by the manufacturer as "DS3/E3/EC1 I/O MOD". 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 NTN839AA, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue