The Key Benefits of VoIP 01 Cost-effective SAVE up to 20% on your monthly voice calls. Vodacom VoIP-to-VoIP (on-net) calls within your business branches are free! 02 Suits your business needs Different VoIP minute bundles (250, 500 and unlimited) are available to suit your business needs. T&Cs apply. 03 VoIP telephone number Port your geographic telephone number(s) to the Vodacom network or we can allocate new telephone numbers to your business.