PABX & VOIP Systems
Modern IP telephony that cuts costs, simplifies management, and grows with your Cape Town business.
Traditional copper telephone lines are expensive, inflexible, and increasingly unreliable. Cape Town businesses that still rely on a legacy PABX and a bundle of Telkom lines are paying far more than they need to for features that modern VOIP systems deliver at a fraction of the cost. ASH Electronics has been designing and installing telephone systems for businesses across the Southern Suburbs and greater Cape Town since 2005, and we have guided hundreds of organisations through the transition to IP telephony.
A VOIP-based PABX system — whether a 3CX deployment, a Yeastar appliance, or a cloud-hosted platform — gives your team professional call routing, voicemail to email, call recording, mobile softphones, and multi-site connectivity. Sales teams in Lansdowne can dial colleagues in Wynberg or Claremont for free, and remote staff working from home connect to the same extension system as the office. Conference calls, hunt groups, IVR menus, and call queues are all managed from a browser-based dashboard that any office administrator can use.
What sets ASH Electronics apart from a dedicated telecoms company is that we also handle your network infrastructure. Voice quality on VOIP depends entirely on a properly configured network — correct QoS settings, adequate bandwidth allocation, and the right switches and routers. Because we install and maintain the cabling, switches, and routers in your office, we configure everything as a single system. You deal with one company for your data network, your internet connectivity, and your telephone system, which means no finger-pointing when something goes wrong. We serve businesses in Lansdowne, Claremont, Wynberg, Rondebosch, Tokai, Kenilworth, Plumstead, and all surrounding areas across the Southern Suburbs and greater Cape Town.
PABX Installation & Programming
- Supply and installation of 3CX and Yeastar PABX systems
- Extension programming, hunt groups, and call routing
- IVR auto-attendant menus for professional call handling
- Call recording setup for compliance and training
- Migration from legacy analogue PABX to IP platforms
- Multi-site PABX linking between branches across Cape Town
VOIP & SIP Trunking
- SIP trunk provisioning with local VOIP carriers
- Number porting — keep your existing business numbers
- Softphone apps for mobile and desktop staff
- International call routing optimisation
- Failover configuration to ensure calls never drop
- Bandwidth analysis and QoS network configuration
Advanced Call Features
- Conference calling and meet-me bridge setup
- Call queuing and ring group configuration
- Presence management and busy lamp field (BLF)
- CRM integration for screen-pop call data
- Time-of-day routing for after-hours call handling
- Detailed call reporting and analytics dashboards
Voicemail & Intercom Integration
- Voicemail-to-email delivery for every extension
- IP intercom installation at gates and reception desks
- Door phone integration with desk phone unlock control
- Paging and announcement system installation
- Unified communications — voice, chat, and video in one app
- Annual maintenance contracts and remote support
Frequently Asked Questions
What is the difference between PABX and VOIP?
A PABX (Private Automatic Branch Exchange) is the physical telephone switch that manages internal and external calls within your business. VOIP (Voice over Internet Protocol) is the technology that carries voice calls over your internet connection instead of traditional phone lines. Modern businesses use VOIP-enabled PABX systems — like 3CX or Yeastar — that combine the call management features of a PABX with the cost savings of VOIP. ASH Electronics installs, configures, and supports both traditional PABX hardware and fully cloud-based VOIP platforms.
How much can my business save by switching to VOIP?
Most Cape Town businesses switching from traditional PSTN lines to SIP trunking via a VOIP provider reduce their monthly phone bill by 40% to 70%. Inter-branch calls between offices in Lansdowne, Claremont, or any other location become free. International calls drop to a fraction of Telkom rates. The savings typically cover the cost of the new system within 12 to 18 months. We provide a detailed cost comparison before any purchase decision.
How many extensions can a business PABX system handle?
The number of extensions depends on the platform chosen. Entry-level systems such as Yeastar S20 support 20 extensions and are ideal for small businesses in Wynberg or Lansdowne. Mid-range platforms handle 50 to 200 extensions, suitable for growing companies across the Southern Suburbs. Enterprise 3CX deployments can scale to thousands of extensions across multiple sites. We size the system precisely to your current headcount and projected growth over three years.
Can you upgrade my existing phone system without replacing all the handsets?
In many cases, yes. If your existing handsets are SIP-compatible IP phones, they can be reconfigured to register to a new 3CX or Yeastar system. Older analogue handsets can often be retained using FXS gateway adapters, which convert analogue signals to VOIP. We assess your existing equipment during the site survey and recommend the most cost-effective upgrade path — whether that means keeping, adapting, or replacing your handsets.
What internet speed do I need for VOIP calls?
Each active VOIP call uses approximately 80 to 100 kbps of bandwidth depending on the codec used. A business with 10 concurrent calls needs roughly 1 Mbps dedicated to voice. However, quality of service (QoS) configuration on your network is more important than raw speed. ASH Electronics configures your router and switches to prioritise voice traffic, ensuring clear calls even on a busy office network. We handle both the network and the VOIP system, so everything is set up to work together.
Do you install intercom systems that connect to the PABX?
Yes. Modern IP intercoms from brands such as 2N and Akuvox integrate directly with PABX and VOIP systems. This means a visitor pressing the intercom at your gate or reception can ring directly to a desk phone, mobile app, or group of extensions. Door release can be triggered from any authorised handset. We install these integrated systems for commercial properties, office parks, and warehouses across Cape Town, including the Southern Suburbs and surrounding areas.
Do you support the system after installation?
Yes. ASH Electronics provides ongoing remote and on-site support for all PABX and VOIP systems we install. Remote access for 3CX and Yeastar platforms means we can diagnose and fix most issues without a site visit. We also offer annual maintenance contracts that include firmware updates, configuration reviews, and priority response. Our clients in Lansdowne, Tokai, Rondebosch, and across the Southern Suburbs benefit from the same team that installed their system remaining their point of contact.