What is the Cisco 16OC3/POS-SM?
The Cisco 16OC3/POS-SM is a network/telecom equipment component, listed by the manufacturer as "C12000 OC-3/STM-1 MOD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

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Part Overview
The Cisco 16OC3/POS-SM is a network/telecom equipment component — originally specified as "C12000 OC-3/STM-1 MOD" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Cisco 16OC3/POS-SM is a network/telecom equipment component, listed by the manufacturer as "C12000 OC-3/STM-1 MOD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Cisco network equipment, including parts such as the 16OC3/POS-SM, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue