Head Office
19 Trinity Close
Cambridge Commercial Park
Paulshof
Sandton
Tel: 086 001 8500
Email: [email protected]
Medium-sized Business PBX Phone Systems in South Africa

Cost-effective, feature-rich business phone systems for expanding enterprises, supporting 6 to 30 users.

Standard and Advanced PBX features including voice mail; call routing; call transfers; auto-attendant, telephone management and more

Fixed-term and month to month subscriptions options

Available to businesses across South Africa

Choose between traditional onpremise systems and cloud based PBX Systems

End-to-end support from trusted specialists

Fully customisable PBX phone systems to meet your organisation’s needs

Scalable and cost-effective mid-sized office telephone systems
A trusted provider of medium business phone systems in South Africa




United Telecoms was born in 1985 out of the need for reliable and cost-effective business telephony solutions. We are a leading provider of business phone systems and VoIP solutions throughout South Africa.
Service areas in South Africa
Western Cape: Cape Town, Belville, Paarl, Stellenbosch, Somerset West, Vredendal, Hout Bay, Green Point, Bloubergstrand, Durbanville, Melkbosstrand.
Eastern Cape: Port Elizabeth, Knysna, East London, George.
Kwa-Zulu Natal: Durban, Pinetown, Ladysmith, Newcastle, Ballito, Port Shepstone, Pietermaritzburg, Umhlanga, Westville, Hillcrest, Amanzimtoti.
Gauteng: Johannesburg, Vereeniging/Vaal, Sandton, Midrand, Pretoria, Centurion, Randburg, Roodepoort, Germiston, Alberton, Edenvale, Menlo Park.
Free State: Bloemfontein, Welkom, Bethlehem.
Mpumalanga: Witbank, Nelspruit.
Northern Cape: De Aar, Kimberley, Repra (Upington Area).
North West: Klerksdorp, Mafikeng.
Limpopo: Phalaborwa, Polokwane/Pietersburg.
Outside South Africa: Botswana, Zimbabwe, Swaziland, Namibia, Mozambique.
We provide on-premise PABX solutions to match the needs of all types of businesses from small businesses with localised operations, to large organisations operating across multiple provinces in South Africa.
Contact us to find a quality PABX solution for your business. You can reach out to our national office using the contact number below or click on “chat now” in the bottom right-hand corner of this page to speak to an expert live.

What is a medium business phone system?
A medium business phone system caters to organisations with approximately 6 to 30 users.
A phone system for a growing organisation needs to streamline communications and provide scalability while remaining cost-effective.
We believe in pairing expanding enterprises with an office phone system that offers a range of standard and advanced communication management features and integrates seamlessly with their essential systems and software.
Our PBX solutions for medium-sized enterprises include on-premise analogue and hybrid PBX systems, as well as cloud-hosted phone systems.
Contact one of our specialists to learn more about the best business phone systems for your organisation.
Features of PBX systems for expanding/growing enterprises
By investing in a reliable, adaptable and feature-rich PBX system, you can address the distinct communication needs of your medium-sized organisation.
Ensuring that you have the right business phone system in place is crucial as collaborative and efficient communication are key for growing enterprises.
Our telephone systems for medium-sized businesses feature a range of standard and advanced features for optimising call management, as well as unified communications functionality to connect your team across systems.
Explore these key features and contact us to get help finding the perfect PBX system for your business.

Call transfer
Call transferring allows you to route calls to the appropriate consultants to help manage calls efficiently and provide a high level of service. Calls can be transferred seamlessly between employees in the same office, multiple offices, or even people in different countries with a well-designed system.

Voicemail
Many of our business phone systems come with four voicemail licences as standard and more can be added as needed. You can personalise the message that a caller will hear and when there is a new voicemail, the system alerts the user, thus increasing productivity and customer service.

Auto attendant
Auto-attendant is a standard or low-cost add-on for a business phone system. It provides an automated pre-recorded menu of options that transfers calls to the relevant department without the need for a human operator. This can help your business streamline call management and improve efficiency.

Fixed-mobile convergence (FMC)
FMC integrates smartphones and mobile devices into a unified solution, allowing users to make and receive calls via the centralised PABX system. Users can install a softphone extension on smart devices, allowing them to be treated as extensions that are part of an organisation’s PABX system. FMC reduces costs and improves efficiency, making it ideal for dispersed workforces across large areas.

Telephone management system (TMS)
Telephone management systems are a suite of third-party software that is connected to the PABX and tracks the number of inbound and outbound calls made, duration of calls, and time of calls per extension. Reports can be generated to track call patterns and detect abuse. TMS can be added to your PABX upon request. The majority of our business phone systems include basic management capabilities.

Unified communication functionality
Unified Communications refers to an integrated communication system within an organisation. United Telecoms assists clients in creating a UC solution, offering benefits such as low-cost communication, presence viewing, video conferencing, and improved customer experience. UC solutions also provide seamless call transferring across branches globally. These features are only a few of the many available in a well-designed UC PABX system.

Music on hold
Music on hold, a common PABX feature, allows businesses to share their unique story while clients wait for assistance. United Telecoms collaborates with clients and professional voice-over companies to craft expert music-on-hold scripts. This versatile marketing tool, suitable for businesses of all sizes, usually requires a pre-recorded MP3 file to be loaded and programmed onto the PBX system.

VoIP compatibility
VoIP (Voice over Internet Protocol) is transforming the telecom industry by converting speech into data that travels over broadband lines instead of traditional copper wires. Most modern hybrid business phone systems for medium-sized businesses offer VoIP compatibility, providing the flexibility to use both VoIP and traditional lines simultaneously. For more details, visit our VoIP page.

Night bells/voice recording system
Night bells or after-hours voice recording systems provide an automated pre-recorded message for callers outside working hours or on holidays. This professional solution, suitable for businesses of all sizes, keeps clients informed about your organisation’s activities and important holiday season information, ensuring a seamless communication experience.

Remote user connectivity
Remote user connectivity, available on most modern PABX systems, enables workers at different locations or working from home to access office PABX features. Utilising IP phones and a stable internet connection, remote employees can seamlessly transfer calls, dial out using office voice connectivity, and connect with colleagues at no additional cost, as if they were physically present in the office.
Manage business communications with on-premise, hybrid or cloud PBX
Managing business communications can be a complex task, but having the right business phone system in place makes it easier to streamline internal and external communications.
There are a few options available for medium-sized businesses to choose from, each with its own set of capabilities, costs and requirements for installation.
Let’s explore on-premise PBX systems (analogue and IP PBX) and Cloud PBX business phone systems.
On-premise analogue and hybrid IP PBX systems for medium-sized businesses
On-premise phone systems include analogue PBX systems, which rely on traditional phone lines, or hybrid PBX systems, which rely on phone lines and an IP network.
We assist with fresh installations, reinstallations, upgrades and downscaling of analogue PBX systems, as well as implementing hybrid IP PBX systems.
Each analogue and hybrid PBX system can be tailored to suit your exact requirements and support a range of features.
Get in touch for expert advice on implementing the right phone system for your medium-sized business.
Contact Us

Cloud PBX solutions for medium-sized enterprises
Cloud PBX, also known as hosted PBX, phone systems, offer businesses the benefits of IP telephony without the need for on-premise hardware.
Cloud PBX systems rely on VoIP technology, your internet network, software and handsets, reducing costs associated with line rentals, the complex installation of physical hardware, call rates and more.
Plus hosted PBX systems are feature-rich, offering a range of standard and advanced features for managing voice communications. You can also keep your landline number when moving to cloud PBX.
Contact us for expert advice on implementing the right hosted PBX system for a medium-sized enterprise.
Cloud-hosted PBX systemsPurchase options for medium business PBX systems
To help you manage your business’ budget and cashflow, United Telecoms offers businesses purchase options via EFT or rental over a fixed term.
Outright purchases via EFT allow businesses to own their hardware right away and save on the overall cost of the system.
PBX rentals offer small businesses the opportunity to avoid larger once-off payments and can provide more flexibility for upgrades or expansions, and maintenance.
PABX rental terms are available for 12 – 60 months depending on your needs and budget. Short-term rental options are available.
Contact one of our expert consultants to learn more about our pricing and purchase options for business phone systems.
Contact usRequirements for PBX phone system installation
The type of business phone system you implement, whether it’s a traditional PBX, IP PBX, or Cloud PBX solution, will affect your requirements for installation.
Let’s dive into some of the essential requirements for installing types of PBX systems. Visit our dedicated PBX installation page for more detail or contact us.
Physical phone lines:
Required for analogue/traditional business phone systems, and hybrid PBX systems. The number of phone lines required will depend on the number of users required.
Hardware
For analogue PBX systems and hybrid PBX systems, a PBX main unit and other important hardware components are required.
Cabling
Desk Phones and base stations for cordless handsets need to be connected to your PBX system, using cabling that must be laid out correctly within your premises. The extent of your cabling requirements may vary if you plan on installing a cloud-based phone solution.
Location
Location is important as it may influence the type of business phone system and network solution that are best for managing your communications. If implementing a VoIP phone system, your coverage in a specific location may determine whether you need to rely on LTE or Fibre to facilitate communications.
Handsets/peripherals:
Businesses may need to have existing PBX handsets or purchase new handsets, which can be analogue, digital, or IP phones, to help them manage communications Handsets and peripherals need to be selected based on their compatibility with your system and their capabilities for managing voice communications.
View our guide to selecting a PBX business phone system and explore the 5 Factors That Influence PBX System Price In South Africa for more information.
Have You Asked These Questions?
- Is the solution for a single physical location or multiple locations?
- What connectivity is available to run services such as VOIP and Video Conferencing?
- How many users would need BYOD device connectivity or mobile office connectivity?
- Is call centre functionality required?
- Do you require a hosted solution or an on-premise solution?
- Will features like Telephone Management Reporting be required?
Let us help you find a solution that can help you overcome your unique communication challenges. Contact us to get expert advice today.
Frequently asked questions about on-premise PABX systems for mid-sized businesses
How do PABX systems integrate with business applications and tools relied on by enterprises?
On-premise PABX systems can integrate with various business applications and tools through Application Programming Interfaces (APIs) or built-in integrations provided by the PABX system vendor. These integrations enable seamless communication between the phone system and applications such as Customer Relationship Management (CRM) software, collaboration tools, and call centre software, which can help streamline workflows, enhance productivity, and improve customer service.

We service the following locations in South Africa
Western Cape: Cape Town, Belville, Paarl, Stellenbosch, Somerset West, Vredendal, Hout Bay, Green Point, Bloubergstrand, Durbanville, Melkbosstrand.
Eastern Cape: Port Elizabeth, Knysna, East London, George.
Kwa-Zulu Natal: Durban, Pinetown, Ladysmith, Newcastle, Ballito, Port Shepstone, Pietermaritzburg, Umhlanga, Westville, Hillcrest, Amanzimtoti.
Gauteng: Johannesburg, Vereeniging/Vaal, Sandton, Midrand, Pretoria, Centurion, Randburg, Roodepoort, Germiston, Alberton, Edenvale, Menlo Park.
Free State: Bloemfontein, Welkom, Bethlehem.
Mpumalanga: Witbank, Nelspruit.
Northern Cape: De Aar, Kimberley, Repra (Upington Area).
North West: Klerksdorp, Mafikeng.
Limpopo: Phalaborwa, Polokwane/Pietersburg.
Outside South Africa: Botswana, Zimbabwe, Swaziland, Namibia, Mozambique.
What Our Customers Say
“Once we approved the installations we were kept up to date daily with the levels of progress on our various sites and were very impressed with the final installation”
Spear Properties
Get In Touch
1st Floor
Block C
Cnr Bosmansdam & Ratanga Rd
Milnerton
Tel: 086 001 8500
Email: [email protected]
12 Sookhai Place
Derby Downs Office Park
Westville
Tel: 086 001 8500
Email: [email protected]