Telkom — fixed voice, mobile & fibre provider in South Africa
Telkom is South Africa’s fixed-line incumbent, a JSE-listed carrier founded in 1991 from the split of the SA Posts & Telecommunications and headquartered in Centurion, Gauteng. Its business arm spans fixed voice — flat-rate VoIP and Cloud PBX from R145 a month — mobile, wholesale fibre through its Openserve subsidiary, and enterprise unified communications. The draw is single-supplier breadth across voice, mobile and fibre with a published rate card. The honest caveat is service experience: Telkom’s public customer-review signal is among the weakest in SA telecoms, so escalation and billing terms are worth pinning down in writing.
Key facts
| Who they are | South Africa’s fixed-line incumbent, Telkom SA SOC Limited, a JSE-listed carrier founded in 1991 with roughly a century of network heritage |
| Voice services | Flat-rate VoIP and Cloud PBX for business, with fixed-voice rates starting at R145 per month |
| Also offers | Mobile, business internet (fibre, LTE and 5G), wholesale fibre via the Openserve subsidiary, and enterprise unified communications |
| Rate transparency | Publishes a listed voice rate card and group-level financial disclosure, which is rare among SA converged carriers |
| Head office | 61 Oak Avenue, Centurion, Gauteng |
| Coverage | National across all nine provinces, on South Africa’s broadest fixed and mobile footprint |
| ICASA licence | Holds its own carrier network and service licences as the country’s fixed-line incumbent |
| Pricing | Fixed voice from R145/month on a published rate card; mobile, fibre and enterprise services scoped per package |
| Listed In | Cloud PBX Providers |
Telkom scopes voice, mobile and fibre from one supplier
Telkom delivers business voice as flat-rate VoIP and a cloud PBX over its own network, so the connection at each site shapes call quality while Telkom controls the routing. Its real differentiator is breadth: fixed voice, mobile, business fibre and enterprise unified communications can sit with one supplier, on a published rate card that most converged carriers do not offer. The honest offset is the public customer-experience signal, which is among the weakest in SA telecoms — billing disputes and support-access complaints are recurring themes on review platforms. That does not make Telkom the wrong choice for every buyer, but it does make written escalation and billing-dispute terms non-negotiable. The buying question is whether single-supplier breadth and rate transparency outweigh a service-record risk you can see on public review sites.
Who Telkom is a fit for
- Buyers who need one supplier scoping fixed voice, mobile and fibre across the whole country.
- Organisations that value a published voice rate card and group-level financial transparency.
- Teams able to secure named account-manager escalation and billing-dispute SLA terms in writing up front.
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Compare Cloud PBX providers →Commonly asked questions
What does Telkom offer businesses?
Telkom Business covers fixed voice (flat-rate VoIP and Cloud PBX), mobile, business internet across fibre, LTE and 5G, wholesale fibre through Openserve, and enterprise unified communications — a single-supplier footprint across voice, mobile and connectivity.
How much does Telkom business voice cost?
Telkom publishes a voice rate card with fixed-voice rates starting at R145 per month. Mobile, fibre and enterprise packages are scoped separately. Request up to 3 quotes through WhichVoIP to compare Telkom against other providers, free and without obligation.
Is Telkom a good choice for business?
Its strengths are breadth and rate transparency — few providers can scope voice, mobile and fibre from one supplier with a published price. The trade-off is a weak public customer-experience signal, so it is worth securing written escalation and billing-dispute terms before you sign.
What is the relationship between Telkom and Openserve?
Openserve is Telkom’s wholesale fibre and network infrastructure subsidiary. It builds and runs the network that Telkom and other retail ISPs use, so a Telkom business line may ride Openserve infrastructure at your address.
Does Telkom cover the whole country?
Yes. As the fixed-line incumbent, Telkom operates across all nine provinces on the broadest fixed and mobile footprint in South Africa. Specific service availability at your address is confirmed at quote.
Can Telkom run a cloud PBX for my business?
Yes. Telkom offers a hosted Cloud PBX alongside flat-rate VoIP, so extensions and features can sit on one platform over your internet or Telkom line. A quote scopes the users, sites and calling package you need.
This listing is maintained by WhichVoIP, an independent South African telecoms comparison service running since 2019. Details are verified against the provider’s public website and were last reviewed on 14 July 2026.