Sigma Systems

Sigma Systems is an Interactive Voice Response (IVR) platform designed to increase communication efficiency within the workplace.


custom applications

Custom Applications

Create custom phone based applications with Sigma Systems’ IVR platform. This platform allows businesses to create ‘dial in’ applications for both customers and employees. These applications consist of a series of IVR menus which can be navigated with a standard phone dial-pad. This provides a great way for customers and employees to quickly and easily find information over the phone, sign in to an account, update records, and more.

Alternatively, your business may choose to have custom IVR applications created by Clearly IP. These applications can then be hosted in the cloud by Clearly, allowing your business to access advanced IVR applications without the need for purchasing a full Sigma server.

Popular Uses

In the past, clients have used Sigma Systems to create a variety of useful applications. Some of these applications include:

  • University Help Desk Services
  • Nationwide Mall Information Services
  • Field Personnel Protection Plan

These are just a few of the possibilities when working with the Sigma Systems IVR platform. Ultimately, the possibilities for call routing and control are only limited by your imagination when working with Sigma Systems.




  • Teleconferencing
  • SMS Messaging
  • Audiotext Information
  • Fax on Demand
  • Call Routers
  • Speech Recognition
  • Universal Messaging of Voice-Fax & E-Mail
  • Prepaid Calling
  • Paging Call/Contact Center Applications
  • Text To Speech



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SIP Service For Sigma

Sigma Services will function with any SIP-Trunking carrier. However, it is designed to be “plug and play” with the Clearly IP SIP Trunking.

All VoIP services provided by Clearly IP are built on top of our redundant ‘N+ Network’.

Designed for reliability, the N+ Network hasn’t experienced a single outage since its introduction in 2009. This means your team can stay focused and productive – even when business gets hectic.

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