What is the NEC X1833A?
The NEC X1833A is a network/telecom equipment component, listed by the manufacturer as "FOTS-SYNCR". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The NEC X1833A is a network/telecom equipment component — originally specified as "FOTS-SYNCR" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The NEC X1833A is a network/telecom equipment component, listed by the manufacturer as "FOTS-SYNCR". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished NEC network equipment, including parts such as the X1833A, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue