What is the Ciena NTK591VN?
The Ciena NTK591VN is a SFP optical transceiver module, listed by the manufacturer as "GE CWDM 1511NM SFP MODULE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Ciena NTK591VN: a SFP optical transceiver module (GE CWDM 1511NM SFP MODULE). Circular Telecom resells surplus and refurbished units of parts like this, helping operators extend network equipment lifecycles and reduce e-waste.
Common Questions
The Ciena NTK591VN is a SFP optical transceiver module, listed by the manufacturer as "GE CWDM 1511NM SFP MODULE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Ciena network equipment, including parts such as the NTK591VN, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue