One Net Express is currently used by two million Vodafone subscribers abroad, reportedly saving them ZAR15 billion (US$1.5 billion) in one year.
The product will be available for less than ZAR200 (US$20) per month and is aimed at companies with no more than 100 employees.
Vuyani Jarana, head of Vodacom’s enterprise unit, said: “There’s no doubt that SMEs are the growth engine for our economy but often the pressures and costs associated with doing business can stifle their development.
“With this in mind, now is an ideal time for us to launch a product that uses mobile technology to provide tangible cost savings.”
The service provides a switchboard service on employees mobiles and as well as being able to import landline numbers with no divert fees.
The South African network has also extended its data price-cut, which was due to expire today, for an extra month.
It will now run until July 6.