What is the Nortel Networks NT5D03FB?
The Nortel Networks NT5D03FB is a power supply unit, listed by the manufacturer as "POWER SUPPLY CALL PROCESSOR 128MB". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The Nortel Networks NT5D03FB is a power supply unit — originally specified as "POWER SUPPLY CALL PROCESSOR 128MB" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Nortel Networks NT5D03FB is a power supply unit, listed by the manufacturer as "POWER SUPPLY CALL PROCESSOR 128MB". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Nortel Networks network equipment, including parts such as the NT5D03FB, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue