What is the NEC X7139A?
The NEC X7139A is an optical network terminal (ONT), listed by the manufacturer as "RC-28D ALM CONT UN-48V". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Looking for the NEC X7139A? This optical network terminal (ONT), described by the manufacturer as "RC-28D ALM CONT UN-48V", is stocked and resold through Circular Telecom's refurbished and surplus telecom equipment network.
Common Questions
The NEC X7139A is an optical network terminal (ONT), listed by the manufacturer as "RC-28D ALM CONT UN-48V". 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 X7139A, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue