Replace costly PSTN and ISDN lines with enterprise SIP trunks. Crystal-clear voice, local number portability, and ZAR-only pricing — from R85 per channel per month.
Significant savings over Telkom POTS lines. Local, national and mobile calls billed per second in ZAR. No exchange-rate exposure, no surprise invoices.
Keep your existing geographic 010/011/012 numbers. Port to our platform with zero downtime during business hours.
Add or remove channels same day. Handle seasonal peaks without paying for idle capacity in quiet months.
Primary and failover SIP routes via geographically separate Johannesburg data centres. Automatic failover in under 2 seconds.
Tested and supported with Asterisk, FreeSWITCH, FreePBX, 3CX, OpenSIPS, Kamailio, Yealink and Fanvil hardware. We configure the trunk — you don't need to.
Our SIP infrastructure runs on generator-backed, UPS-protected hosting. Pair with our hosted PBX option and your phones keep ringing even when your office is off-grid.
Prices exclude VAT. Mobile and international rates available on request.
Voiceflow has been deploying SIP infrastructure since the early days of VoIP in South Africa. Our team has hands-on experience with every major SIP stack and understands the nuances of local ICASA regulations, number plan management, and the interconnect agreements that affect call quality on South African routes.
We work with Asterisk, FreeSWITCH, OpenSIPS, Kamailio, 3CX, FreePBX, Yealink, Fanvil and Grandstream — and we've seen and solved nearly every edge case in the local market.
Book a Free VoIP Consultation →Years delivering SIP & VoIP solutions in South Africa
Free consultation. ZAR pricing. No lock-in contracts.