What is the Cisco 12000-SIP-400?
The Cisco 12000-SIP-400 is a processor module, listed by the manufacturer as "SPA Interface Processor-501". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Looking for the Cisco 12000-SIP-400? This processor module, described by the manufacturer as "SPA Interface Processor-501", is stocked and resold through Circular Telecom's refurbished and surplus telecom equipment network.
Common Questions
The Cisco 12000-SIP-400 is a processor module, listed by the manufacturer as "SPA Interface Processor-501". 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 12000-SIP-400, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue