What is the Tellabs CM3920-A?
The Tellabs CM3920-A is an equipment module, listed by the manufacturer as "SIMX16, SDH I/F MODULE & CROSS-CONNECT". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Manufactured by Tellabs, the CM3920-A (SIMX16, SDH I/F MODULE & CROSS-CONNECT) is an equipment module. Circular Telecom sources, tests, and resells surplus and refurbished Tellabs equipment like this as part of a lower-carbon alternative to new procurement.
Common Questions
The Tellabs CM3920-A is an equipment module, listed by the manufacturer as "SIMX16, SDH I/F MODULE & CROSS-CONNECT". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Tellabs network equipment, including parts such as the CM3920-A, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue