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A VoIP Line is a direct line service used in conjunction with a VoIP telephone (desktop/cordless) or phone adapter (ATA) to make and receive calls.  

Unlike traditional fixed lines, your VoIP switchboard can be moved without requiring a change of telephone number. We can supply either Geographic or Non-Geographic numbers or alternatively you can keep your existing Telephone Number and port it through the Network.

VoIP Trunk and DDI

The VoIP Trunk is a multi-line service used in conjunction with either a VoIP switchboard, or, a gateway device connected to a traditional switchboard. A single telephone number is provided for inbound service. The VoIP Trunk DDI service is provisioned to include 4 channels, enabling you to assign each extention a new telephone number. It can be upgraded at any time without interruption to service.


  • Automated Attendant
  • Call Detail Records
  • Call Divert
  • Call diverts in the event of connectivity failure
  • Call Flow – customise how calls are answered
  • Call forwarding
  • Call forwarding on extensions
  • Call Queuing
  • Call waiting (on compatible phones)
  • Choice between SIP or IAX2 protocols
  • Free fax-to-email service
  • Free voicemail-to-email service
  • Interactive Voice Response (IVR)
  • Internal Call Transfer at no cost, irrespective of where the extension is physically located
  • Keep your Telkom number by porting it to Switch Telecom
  • Multiple codec support
  • Multiple simultaneous calls (one per channel)
  • One telephone number
  • Optional Call recording per-individual basis
  • Pin codes if required for each staff member – call costs on a
  • Receive two simultaneous calls (on compatible phones)
  • SIP protocol: Multiple codec support
  • Switch Telecom local and International call rates
  • Time Based Call Routing
  • Voice mail for each extension
  • Voice mail to Email
  • Voicemail



  • A VoIP Telephone (desktop/cordless) or Analogue Phone Adapter (ATA)
  • A reliable Broadband internet connection



Destination Rate
On Network R 0.17
National R 0.30
Mobile R 0.59

All rates are quoted per-minute. Calls charged per second from the first second.
Peak – Monday to Friday 7am to 8pm. Off-Peak – all other times.



Destination VoIP Telkom Saving  
On Network/Inter-branch R 0.17 R 0.46 69% *Note 1
Local R 0.30 R 0.46 45% *Note 1
National R 0.30 R 0.46 45% *Note 1
Mobile  R 0.59 R 1.30  64% *Note 1

*Note 1: Savings are based on both the rates and the benefit of per-second billing.