What is Class 4 softswitch?

Class 4 VoIP softswitch is the kind of VoIP software which is used to transit VoIP traffic between the carriers. The main task of Class 4 softswitch is to maintain the uninterrupted routing of the large volumes of long distance VoIP calls. It is characterized by protocol and codec support and conversion, calls per second rate, number of concurrent calls, etc.

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