Every rand counts when you're on the phone all day. We've priced them all — independently.
Written by Mechelle Gindra, Editor · Last verified: September 2026
Independent Reviews
Sponsors Always Disclosed
Rankings Are Scored, Not Sold
11 Providers Compared
ICASA Verified
Your buying journey
1
Learn
Pillar guide
2
Compare
You are here
3
Get quotes
Matched providers
Compare VoIP providers in South Africa side by side: 11 business VoIP and SIP providers, scored on the same five-part rubric, with verified entry pricing, published call rates, contract terms and setup fees in one table.
This is stage 2 of the buying journey. If you still want the basics — what business VoIP is, how SIP trunking differs from hosted VoIP, and what it should cost — start with the VoIP guide. If you already know what you need, filter the table by team size, shortlist two or three providers, and we'll match you with quotes.
The 30-second answer
As of September 2026, WhichVoIP compares 11 VoIP providers in South Africa. The top-scored provider is Switch Telecom at 8.6/10, and published entry prices run from R49 to R280 a month; the cheapest published seat is Innovo Networks at R49 per extension, a Switch Telecom SIP trunk starts at R100 a month for four channels, and AVOXI's R280 is a monthly minimum. Six of the eleven bill month-to-month and three charge no setup fee.
Sponsored partners are shown first in these picks. Sponsorship never changes a score, a verdict or a position in the comparison table below. How sponsorship works.
Hosted PBX, Teams Direct Routing and SIP trunks from one supplier
R49/ext/mo (Hosted PBX Starter, ex VAT)
SIP trunks and Teams Direct Routing quoted
Landline: 25c/min
Mobile: 35c/min
On-net: Free
Billed per second, ex VAT
Voice, Network & Security
✓✓✓✓✓✓
Comparison price is the entry-tier price per channel, excluding 15% VAT, shown alongside each provider’s verbatim published price. Per-minute call rates and mandatory add-ons are listed separately and are not folded into this figure. Quote-based providers are shown as quote-based. All prices and call rates on this page exclude 15% VAT.
Published VoIP entry prices on this table run from R49 to R280 a month, before call charges and VAT.
3. How to choose a VoIP provider in South Africa
Six checks, in the order they save you money. Where a number appears below, it comes from the comparison table above.
1. Understand the difference between SIP trunking and hosted VoIP
SIP trunking connects your existing PBX system (on-premises or cloud-based) to the internet, replacing traditional phone lines with cheaper internet calls. You keep your existing phone system and just swap out the trunk. Hosted VoIP is a complete phone system in the cloud — you don't need any on-premises hardware at all. SIP trunking is best if you already have a PBX you're happy with. Hosted VoIP is best if you're starting fresh or want to simplify. Most SA VoIP providers, like Centracom and Switch Telecom offer both — choose based on what you already own.
2. Calculate your true cost per call
VoIP pricing in South Africa mixes monthly fees with per-minute call costs. A provider might charge R65/month per extension but 28c/min for landline calls. If your team makes 1,000 landline minutes per month (about 50 calls per person in a 10-seat office), that's R280 in call charges plus R650 in seat fees = R930 a month for the team. The same team on Switch Telecom (R26 an extension plus a trunk from R100, at 24c/min) would pay about R360 in base fees plus R240 in calls — R600, still well below the R930 above. Ask every provider for a cost projection based on your last 3 months of actual calling data. Any credible provider will run this calculation for free. Don't just compare the advertised monthly price; look at total cost of calls.
3. Check load shedding resilience
This is uniquely South African. A VoIP service is only as reliable as your internet connection and power supply. The best providers offer automatic failover to mobile numbers during outages, UPS-backed infrastructure, and the ability to take calls via a mobile app on cellular data. Centracom and Switch Telecom both include mobile app failover as standard. If a provider can't explain what happens to your calls during Stage 4 load shedding, don't sign with them.
4. Evaluate call quality guarantees
VoIP call quality depends on three factors: codec choice, network latency, and jitter. Most SA providers use the G.711 codec (high quality, 100 Kbps per call) but some offer G.729 (lower bandwidth, slight quality trade-off). Latency over 150ms becomes noticeable; over 300ms is unacceptable. Reputable providers publish their network latency on their website or support docs. Request a test call to check quality during peak hours (10am–12pm is SA's busiest window). If you're on ADSL or unstable wireless, ask about QoS (Quality of Service) configuration — a good provider will help you prioritise voice traffic.
5. Understand number porting
You can keep your existing South African phone number when switching to VoIP. The process is called number porting and takes 5–10 business days. Your new provider handles it; you just provide a letter of authority and your current service agreement. There's usually no cost, though some charge R250–R500 per number. During porting, set up call forwarding to your mobile so you don't miss calls. Never let your old provider disconnect your line until the new provider confirms the port is complete.
6. Verify ICASA licensing
Any provider offering voice services in South Africa must hold an ICASA Electronic Communications Network Service (ECNS) and Electronic Communications Service (ECS) licence. Operating without one is illegal, and if a dispute arises, you'll have no regulatory recourse. Every provider listed on WhichVoIP has been verified as ICASA-licensed. If you're evaluating a provider not on our platform, ask for their licence number and verify it on the ICASA website before committing.
✓
The short version: price on total monthly cost for your real minutes, prefer month-to-month, confirm the ICASA licence, and test call quality on your own connection before you port numbers.
!
Compare like for like: prices exclude 15% VAT; Switch Telecom's R100 is a four-channel SIP trunk, not a per-seat fee, and AVOXI's R280 is a monthly minimum on USD-linked tiers — size each to your call concurrency before comparing totals.
4. How we score VoIP providers
WhichVoIP's ratings are calculated using a weighted scoring model across five dimensions. Every provider is evaluated using the same criteria, and no provider can pay for a higher score or a higher position in the comparison table. Sponsored partners are shown first, and labelled as such, in the top picks above the table. Our revenue comes from connecting businesses with providers — not from providers buying visibility.
25%
Pricing Value
25%
Feature Set
20%
Customer Reviews
15%
Reliability & Uptime
15%
Support Quality
Scores are recomputed when review data, pricing or features change. The "Last updated" date in the header is the most recent review cycle. Unlike provider-run comparison pages that rank their own products first, WhichVoIP is editorially independent — and has been since 2009.
Per-minute call rates decide the bill for heavy callers; the seat fee decides it for everyone else.
5. Frequently asked questions
What is VoIP and how does it work?▼
VoIP (Voice over Internet Protocol) is a technology that converts your voice into digital packets and transmits them over an internet connection instead of traditional analogue phone lines. When you speak into a VoIP phone or softphone, your voice is digitised, compressed, and sent as data packets to the recipient's phone, where the process reverses. The quality depends on your internet speed, latency, and the codec used. Unlike traditional landlines, which need dedicated physical circuits, VoIP can run over any broadband connection — fibre, ADSL, or even wireless. This flexibility is why VoIP is 60–70% cheaper than traditional phone lines for businesses.
How much does business VoIP cost in South Africa?▼
Business VoIP in South Africa ranges from R29/user/month (Telviva's PAYG plan) to R135/user/month (United Telecoms' enterprise tier). Most mainstream providers fall between R29–R149 per extension per month. All prices on this page exclude 15% VAT. Call rates add on top and typically range from about 24c/min to landlines up to 35c/min at enterprise providers, though not every provider publishes a rate card. For a realistic total cost: a 5-person office on Switch Telecom (R260 per 10-extension block, a trunk from R100, and 24c/min to landlines) making 500 landline minutes a month would pay about R480, or R96 a person. The same office on a traditional landline costs R3,000–R3,500/month, so VoIP saves them R2,500+ monthly. Get quotes from at least two providers based on your actual call volumes to compare true total cost.
Is VoIP reliable enough for business?▼
Yes, VoIP is reliable enough for business — with caveats. A properly configured VoIP system from a reputable provider (hosted in a data centre with redundant infrastructure) is generally as reliable as traditional landlines. However, VoIP depends on two things: your internet connection and your local power supply. If either fails, you lose calls. This is why load shedding is a serious concern in South Africa. The solution: choose a provider with automatic mobile app failover (so you can take calls on cellular data during outages) and consider backup internet (wireless LTE/5G) for critical locations. Centracom and United Telecoms both offer this. With proper backup plans, VoIP is absolutely reliable for SA businesses.
Can I keep my phone number when switching to VoIP?▼
Yes, you can. The process is called number porting. All major South African VoIP providers support porting of geographic numbers (011, 021, 031, etc.) and national numbers (010, 087). The process typically takes 5–10 business days. Your new provider will handle the porting — you just need to provide your current service agreement details and a letter of authority. There's usually no cost, though some providers charge R250–R500 per number. During the transition, your new provider will set up temporary call forwarding to your mobile so you don't miss calls. Important: don't let your old provider disconnect your line until the new provider confirms the port is complete.
Do I need special phones for VoIP?▼
No, you don't need special phones, though they can help. You have three options: (1) Use IP desk phones (Yealink, Grandstream, Poly — from R800–R3,000 each) for a traditional phone experience. (2) Use softphone apps on your computer (free, included with most VoIP providers). (3) Use mobile apps on your smartphone (included by all major providers) to take business calls anywhere on your phone's data connection. Many businesses start with softphones and mobile apps (zero cost), and only buy desk phones for reception or staff who prefer physical handsets. If you already have SIP-compatible IP phones, they'll likely work with any VoIP provider — just ask your provider to confirm compatibility.
What's the difference between VoIP and a landline?▼
The key differences are technology, cost, and features. A traditional landline uses analogue circuits (dedicated phone lines from your office to the telephone exchange). VoIP sends voice as digital packets over your internet connection. Landlines are more stable (they work during internet outages) but expensive — typically R300–R350 per line per month. VoIP is cheaper (R29–R149 per user) and more flexible (add users instantly, no wait for installation). Landlines offer single-line service; VoIP lets you route calls between extensions and create hunt groups. The trade-off: VoIP depends on your internet quality. For a business making 50+ calls per day, switching from 5 landlines to VoIP typically saves R3,000–R3,500 per month.
Does VoIP work during load shedding?▼
VoIP itself works during load shedding if your data centre has backup power (all major providers' data centres do). However, you can't use it from your office if the power is out and you don't have UPS backup for your router and phones. The solution is a mobile app fallover: most VoIP providers include smartphone apps that let you take business calls over cellular data during an outage. Centracom and Switch Telecom both include this as standard. Some providers also offer automatic call forwarding to your mobile number when the office connection drops. When evaluating a provider, specifically ask: "What happens to incoming calls during a power outage at my office?" If they can't explain a clear failover plan, look elsewhere.
What is SIP trunking?▼
SIP trunking is a way to connect your existing PBX system (whether on-premises or cloud-based) to the internet for cheaper calling rates. Instead of using traditional phone lines (POTS — Plain Old Telephone Service) or ISDN trunks, SIP trunking sends your calls over an internet connection to a VoIP provider's network, where they're routed to their destination. Think of it as replacing your old phone lines with modern internet-based circuits. SIP trunking is useful if you already own a PBX and want to save money on call rates without replacing the entire system. Providers like Centracom and Switch Telecom offer both SIP trunking (for existing PBX owners) and hosted VoIP (for businesses without existing systems). SIP trunks require minimal setup — usually just reconfiguring your PBX to point to the provider's SIP server.
Get matched with real VoIP providers
Tell us your team size and call volume. We'll send your details to up to three vetted SA providers – no spam, no commitment.
