Business VoIP
One office number, on every device.
A hosted phone system for your office. Calls ring on desk phones, laptops and cellphones at the same time, and you keep the number your clients already know.

What it is
A switchboard without the box
There is no phone system to buy or maintain in your office. It runs online, and your phones connect to it over your internet line.
Keep your number
We move your existing number across, 021 and other area codes included.
Answer anywhere
The mobile app makes a cellphone or laptop an office extension.
Desk phones if you want them
Use standard IP desk phones at reception and on desks. Send us the make and model of phones you already have and we check them.
Grows with your team
Add or remove extensions month to month. No contract.
Per-second billing
Calls to any South African number at one rate, billed per second.
Protected from bill shocks
International and premium numbers stay blocked unless you ask, and every account has a spending limit.
Included
Every extension includes
- Your own extension number
- Voicemail sent to your email
- Call groups that ring several phones
- A welcome menu ("press 1 for sales")
- Call transfers between staff
- Free calls between your extensions
What you need
Three things to get going
An internet line
A stable fibre or LTE line. If you don't have one, we can supply it.
Phones or the app
IP desk phones, the app on laptops and cellphones, or a mix of both.
A local IT partner
They install your phones and are your first call for support. We run the system behind them.
Questions
Before you switch
Will my calls sound clear?
Call quality depends mostly on your internet line. We check your line before you go live and tell you if it needs attention.
What happens when the power or internet goes down?
Calls keep reaching staff who have the mobile app on their cellphones, and voicemail still arrives by email.
How long does it take to switch?
New extensions are usually quick to set up. Moving an existing number takes longer because your current provider has to release it. Your old line keeps working until the move is done.
Is there a contract?
No. Service is month-to-month, billed in advance by debit order.
See what your office would pay
Send us your current phone bill. Within one business day you get a written quote showing what you'd pay with Jax Tech, and what you'd save.