Solid Systems — managed IT and VoIP provider in Cape Town and Johannesburg
Solid Systems has run as a managed IT company since 2003, from offices in Cape Town, Johannesburg and London. Its core is strategic IT support, cyber security and Microsoft 365 and Azure consulting, and VoIP sits inside its cloud services rather than being sold as a standalone telecoms product. The company is a Microsoft Gold Partner with Modern Work, Infrastructure and Security specialisations, and offers a full refund of managed-services fees if a client is unhappy in the first three months.
Key facts
| Who they are | A managed IT provider operating since 2003, offering strategic IT support, cyber security, Microsoft 365 and Azure consulting, cloud services, disaster recovery and IT project work |
| Voice services | VoIP forms part of the cloud-services line rather than a separate telecoms product. That framing is honest and it matters: this is a managed IT partner that will also run your phones, not a voice specialist |
| Microsoft credentials | Microsoft Gold Partner, with Modern Work, Infrastructure and Security specialisations, Azure cloud specialist status and Surface authorised-reseller status. For a business already committed to Microsoft 365, that alignment is the substantive reason to look here |
| Three-month guarantee | The company publishes an unusual commitment: if a client is not happy with the service in the first three months, it will refund 100% of managed-services fees paid to date. Get the exact terms in writing, but a supplier willing to publish that is worth a conversation |
| Head office | 128 Strand Street, De Waterkant, Cape Town, 8005, with further offices in Johannesburg and London |
| Coverage | Cape Town and Johannesburg in South Africa plus London. Managed IT is delivered remotely and on site; VoIP works over your internet connection wherever your team is |
| Customer rating | 4.9 from 52 Google reviews on a profile matching the domain and the published phone number. The review keywords are helpful staff, cybersecurity, urgent response and proactive team, so the sample reflects the managed-service relationship |
| Pricing | Quote-based on a monthly managed-services plan, with VoIP included in the package rather than priced per extension. Ask for it broken out if you want to compare the voice element to the market |
| ICASA licence | Not published. VoIP runs over your internet line and rides a licensed carrier, so confirm which entity that is when you request a quote |
| Best suited to | Businesses whose IT strategy is already Microsoft-centred and who want one partner across support, security, cloud and phones |
| Listed In | VoIP Providers |
A managed IT partner that also runs the phones
VoIP is delivered over your internet connection, so the technical coverage question is the line at each site. The commercial question here is different, and worth being clear about before making contact: Solid Systems is not a telecoms company. It is a Microsoft-centred managed IT provider whose cloud services happen to include voice, and it says so plainly. That shapes who should buy from it. If your business runs on Microsoft 365 and you want one partner handling security, cloud, support and the phone system under a single monthly agreement, the Gold Partner status and the three specialisations are real credentials and the arrangement is coherent. If you want a voice specialist who will optimise call routing, negotiate per-minute rates and manage a complex contact-centre deployment, this is not that supplier, and a per-extension comparison against a dedicated VoIP provider will look unflattering because it is not comparing the same thing. Two practical steps. Ask for the voice element broken out of the managed-services plan so you at least know what you are paying for it. And get the three-month full-refund commitment in writing with its conditions, because a published money-back promise is only as good as the terms attached to it. Compare providers in the VoIP directory.
Who Solid Systems is a fit for
- Microsoft 365 businesses wanting security, cloud, support and phones under one partner
- Companies with UK operations that need a supplier present in both London and South Africa
- Buyers who value a published money-back commitment on the first three months
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Ask for the VoIP element broken out of the managed-services plan so you can compare it against a dedicated voice provider, even if you intend to buy the bundle. Get the three-month full-refund commitment in writing with its exact conditions. Confirm which licensed carrier terminates the calls and what the porting timeline looks like.
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Weigh up the alternatives
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Compare VoIP providers →Commonly asked questions
How long has Solid Systems been operating?
Since 2003, growing from South Africa to offices in Cape Town, Johannesburg and London.
Is Solid Systems a telecoms company?
Not primarily. It is a Microsoft-focused managed IT provider, and VoIP forms part of its cloud services rather than being a standalone telecoms product.
What Microsoft credentials does it hold?
Microsoft Gold Partner with Modern Work, Infrastructure and Security specialisations, Azure cloud specialist status and Surface authorised-reseller status.
Is there a money-back guarantee?
The company publishes a commitment to refund 100% of managed-services fees paid to date if a client is unhappy in the first three months. Get the exact terms in writing.
Where are the offices?
128 Strand Street, De Waterkant, Cape Town, plus Johannesburg and London.
What is Solid Systems rated on Google?
4.9 from 52 reviews, on a profile matching the domain and published phone number, with review keywords about support responsiveness and cybersecurity.
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 1 August 2026.