CJA Telecommunications — turnkey network infrastructure contractor
CJA Telecommunications builds and maintains mobile network infrastructure across Southern Africa — base stations, microwave links, towers and the civil work underneath them. It is a turnkey contractor working for network operators. It does not sell connectivity or phone services to businesses.
Key facts
| Who they are | CJA Telecommunications, a turnkey project solutions contractor serving the telecommunications industry across Southern Africa. |
| What they actually do | Build networks, not sell them. The work is cellular, GSM, BTS, microwave, site establishment, project management, logistics, SDH, civil works, network maintenance and network fault management — commissioned by operators, not bought by businesses. |
| Managed services | TSS, line-of-sight and planning surveys · structural engineering and design · azimuth verification and drive testing · NOC front-office and performance management back-office functions · preventative site and tower maintenance · RF installations and upgrades · microwave link installation and commissioning · BTS installation and commissioning · power installations and certification. |
| Head office | 224 Battery Street, Silverton, Pretoria, 0184, with offices in Polokwane and Cape Town. |
| Why this listing changed | A previous version described CJA as a business voice and connectivity reseller. That was never true — the company builds cellular infrastructure. The description has been corrected. |
| Listed In | Wireless Internet Providers |
The layer beneath every mobile signal
When a mobile operator lights up a new area, somebody surveys the site, engineers the tower, pours the base, installs the antennas at the correct azimuth, commissions the microwave link back to the core and certifies the power. That is this company’s work, and it is genuinely skilled: drive testing and azimuth verification are the difference between a tower that performs and one that does not. It is also completely invisible to the businesses who eventually use the signal, which is why a quote form has no place on this page. If you arrived here looking for connectivity or a phone system, compare the verified providers instead.
Who CJA Telecommunications is a fit for
- Mobile network operators commissioning BTS, microwave or tower builds
- Operators needing site surveys, drive testing, RF upgrades or power certification
- Anyone who reached this page wanting connectivity — compare verified providers instead
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Looking for internet or a phone system?
CJA Telecommunications builds cellular infrastructure for network operators — it does not sell connectivity or voice services to businesses, so there is no quote to request here. Compare the South African providers WhichVoIP has verified.
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Compare phone systems →Commonly asked questions
Can my business buy internet or phones from CJA?
No. CJA is a turnkey infrastructure contractor building and maintaining networks for operators. It has no retail or business service.
What does CJA actually build?
Cellular and GSM infrastructure, BTS and microwave links, site establishment and civil works, SDH transmission, plus ongoing network maintenance and fault management.
What is drive testing and azimuth verification?
Field measurement of how a tower actually radiates, and confirmation that antennas point where the design says they should. Both determine whether a site performs as engineered.
Where is CJA based?
Head office at 224 Battery Street, Silverton, Pretoria, with offices in Polokwane and Cape Town.
Why did this page change?
Because it was wrong. A previous version described CJA as a business voice and connectivity reseller, which it has never been. It builds cellular infrastructure, and the listing now says so.
Who should I buy connectivity from?
A service provider. The WhichVoIP comparisons cover South African providers whose coverage and pricing we have verified.
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.