Softswitch is a next generation software switch based on the internet protocol technology. This software tool is developed with the idea of having an interconnection between the arrays of different media services and creating the new extensive services. The softswitch can process all type of signals for every kind of packet protocols. It works as the call agent or the controller for the gateways of media. A key element of VoIP system, the softswitch should be selected with the utmost care.