Are you using ConnexCS?

Meet M4, the ConnexCS alternative for VoIP providers requiring a more robust Class 4 Softswitch with advanced billing and routing features to manage voice business more efficiently.


On-premise installation vs. Cloud hosting

Kolmisoft ConnexCS
Kolmisoft softswitches are available on-premise (installation is done on your server) and as a hosted platform (installation on dedicated servers).

This gives you more flexibility and more control.

ConnexCS is a fully cloud-based carrier service.

On-premise installations are not available.


Problems with Billing

Below are a few emails/posts from a few ConnexCS clients who share their challenges.



Goes Down Frequently



RTP Issues and Connectivity Problems



Wondering where to start?

Here are some useful resources:


Ready to try M4 seriously?

Sign up for the Pilot project and you‘ll get:

  • Installation on your server or on Kolmisoft dedicated servers
  • Technical support and assistance with configurations
  • Fully functional system with the complete feature set

Still have questions? Contact us and we’ll be glad to assist!