Introduction

To fully appreciate the features of Class 5 services, it's essential to first understand Class 4 services and the key differences between them.

Class 4 vs. Class 5 Softswitch

What is a Class 4 Softswitch?

A Class 4 softswitch is primarily responsible for routing traffic from one carrier to another.

ConnexCS operates as a Class 4 softswitch.

The call never connects to ConnexCS itself; it simply passes through from Point A to Point B.

It can perform advanced routing functions, but does not handle call termination, media processing, or IVR.

What is a Class 5 Softswitch?

A Class 5 softswitch is responsible for call termination and media handling.

It can perform actions like: + Answering calls + Playing messages + Providing voicemail and IVR services + Unlike Class 4, a Class 5 switch manages end-user call features.

Key Difference Between Class 4 and Class 5 Softswitches

Feature	Class 4 Softswitch (ConnexCS)	Class 5 Softswitch
Call Routing	✅	✅
Call Termination	❌	✅
IVR & Media Services	❌	✅
End-User Features	❌	✅