What is the Cisco RSP4?
The Cisco RSP4 is a network switch, listed by the manufacturer as "ROUTE SWITCH PROCESSOR 4 MODULE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Looking for the Cisco RSP4? This network switch, described by the manufacturer as "ROUTE SWITCH PROCESSOR 4 MODULE", is stocked and resold through Circular Telecom's refurbished and surplus telecom equipment network.
Common Questions
The Cisco RSP4 is a network switch, listed by the manufacturer as "ROUTE SWITCH PROCESSOR 4 MODULE". 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 RSP4, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue