What is the Ciena NX2520AD?
The Ciena NX2520AD is a GBIC transceiver, listed by the manufacturer as "ON2500 GBIC MULTI-RATE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The Ciena NX2520AD is a GBIC transceiver — originally specified as "ON2500 GBIC MULTI-RATE" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Ciena NX2520AD is a GBIC transceiver, listed by the manufacturer as "ON2500 GBIC MULTI-RATE". 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 NX2520AD, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue