What is the Cisco A900-IMA16D?
The Cisco A900-IMA16D is an equipment module, listed by the manufacturer as "ASR 900 16 port T1/E1 Interface Module". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Manufactured by Cisco, the A900-IMA16D (ASR 900 16 port T1/E1 Interface Module) is an equipment module. Circular Telecom sources, tests, and resells surplus and refurbished Cisco equipment like this as part of a lower-carbon alternative to new procurement.
Common Questions
The Cisco A900-IMA16D is an equipment module, listed by the manufacturer as "ASR 900 16 port T1/E1 Interface 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 A900-IMA16D, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue