Cisco is already a supplier to NBN Co, having led a consortium that successfully bid to provide NBN Co's data centre platform.
The new contract is for the supply of equipment at NBN Co sites as part of the infrastructure for the company's operational support system and business support system.
Work on the five-year contract will begin immediately.
"This equipment will enable communication between NBN Co's centralised operational staff and IT systems with the fibre, fixed wireless and satellite equipment situated at various locations across Australia.
"The remote control of this equipment, via the NCN, will allow new services to be activated and faults to be diagnosed and repaired quickly and efficiently across Australia," he explained.