Are you looking for an alternative to Cirpack Softswitch?

Meet M4 SBC, the alternative to Cirpack Softswitch for VoIP providers who want a more user-friendly and reliable Class 4 Softswitch for managing VoIP billing and routing more efficiently.

Wondering where to start?

Here are some useful resources:

Review the list of M4 features
Check the complete M4 documentation
See the hardware requirements and implementation examples
Try the online demo (it shows the administrator’s interface)
Request pricing information
Contact us with any questions

Ready to try M4 SBC seriously?

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

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