Two of the company's directors have accepted an offer to sell their stakes at 26c a share.
The company pumps $100 million into the networking start-up founded by three Cisco employees.
The company's new low-latency network completes a trade between New York and Chicago in around14.5 milliseconds.
PureSystems has been hailed by IBM as a new category of virtualised and cloud computing.
Investors will spend more on subsea fibre for Africa than any other continent, but new systems are not driven by capacity constraints.
Mobile technologies, social networking, visual interfaces and virtualisation create opportunities for Cisco to rollout telepresence solutions.
Dark Fibre Africa works with the Benoni Municipality to deploy a R75 million fibre network in and around the area.
The company revamps offerings to meet the growing demand for cloud and mobile technologies.
The telecoms infrastructure company invests R63 million in networks serving operators in West Africa.
In co-operation with Benoni Municipality, this project will launch the city into the digital age.
The majority of local companies use Cisco solutions, followed by HP, IBM and Juniper, respectively, survey finds.
The British telecoms group will be responsible for Anglo American's global networked IT services, for the next five years.
The acceptance of virtual desktop infrastructure will revolutionise the way companies run their businesses.