What is the NEC 750449?
The NEC 750449 is a circuit card / line card, listed by the manufacturer as "COIB(4)-U30 ETU 750449 Line Card With Caller ID". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
NEC 750449: a circuit card / line card (COIB(4)-U30 ETU 750449 Line Card With Caller ID). Circular Telecom resells surplus and refurbished units of parts like this, helping operators extend network equipment lifecycles and reduce e-waste.
Common Questions
The NEC 750449 is a circuit card / line card, listed by the manufacturer as "COIB(4)-U30 ETU 750449 Line Card With Caller ID". 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 750449, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue