BroadCloud Calling is described as a complete cloud-based platform, enabling service providers to deliver voice and collaboration services over IP-based networks.
Optus Business will use BroadCloud Calling to launch Optus Cloud Calling in June.
Capabilities will include telephony, mobility and advanced conferencing and collaboration tools.
"Optus is pleased that we can bring these benefits to Australian enterprises in partnership with Cisco, the leading unified communications and collaboration vendor globally."
Optus will use BroadCloud Calling as part of a complete end-to-end managed service bundled with its Evolve Voice SIP trunking and business mobile services.
Cisco completed its acquisition of BroadSoft just over a year ago.
"Optus Business is a valued strategic partner," said Cisco Australia chief executive Ken Boal.
"We knew they were the right organisation to launch our BroadCloud offering and have it join their strong set of cloud-based collaboration solutions.
"With tight integration to Cisco's Webex solutions, organisations will gain access to advanced audio and video conferencing and Team collaboration applications. When combined with Optus Cloud Calling, customers will have access to an advanced collaboration toolset, that is fast to deploy, flexible, scalable and with a predictable cost."