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Class 4 Softswitch: Definitive Factor for Wholesale VoIP Success

  • May 2, 2022

The VoIP telephony industry uses a whole gamut of VoIP solutions. The VoIP Softswitch solutions are the fundamental and vital elements of this whole VoIP telephony network. One of the renowned VoIP Softswitch solutions is a class 4 Softswitch. It is the platform that works as a definitive and unmissable factor to run a wholesale VoIP business. From open-source software consulting service providers to best VoIP service providers use this platform directly or indirectly.

What is the role of the class 4 VoIP Softswitch solution on the VoIP network?

It is one of the popular open source Softswitch solutions and it is renowned for managing wholesale traffic. That is the reason, it is also popularly known as a wholesale Softswitch solution.

The role of this Softswitch open source solution is as below:

  • It receives the call traffic from a carrier in mass quantity. It needs to be routed to the destination, which usually is an international destination.
  • The class 4 Softswitch software routes the call from the source to destination in wholesale using one of the relevant or predefined call routing strategies.
  • At the destination, another carrier or a class 5 Softswitch solution receives the call traffic and routes it to the end users to have a conversation.
Why Is it a definitive factor for wholesale VoIP Success?

The class 4 Softswitch is the only VoIP solution that handles long distance call routing operations. Thus, if this open source Softswitch is not available in the industry, it becomes difficult or impossible to traverse calls from source to destination.

The best class 4 VoIP Softswitch solutions are filled with robust features, which can handle thousands and in some cases, millions of concurrent calls per second. This makes using this solution unavoidable on the VoIP network.

The Softswitch open source solution consists of multiple call routing strategies such as:

  • Least cost routing (LCR)
  • Prefix based routing
  • Priority based routing
  • CLI based and Non-CLI based call routing
  • Lossless routing
  • Hybrid call routing
  • Cost based call routing

The wholesale VoIP service providers use these call routing strategies to define custom rate cards and packages to run a business and generate revenues. For example, the least cost routing rule defines that the call traffic has to be traversed using the call routes that are cheaper. This serves the customers that seek cheap international calling services.

Business callers often use priority based call routing to reach their destination and have a call with crystal clear audio call quality and high definition video quality. They are ready to pay a higher cost.

This is how the wholesale Softswitch solution helps in running a successful wholesale VoIP business.


In a nutshell, a class 4 Softswitch software solution is a perfect platform that supports international calling depending on the need of the customer, whether it is cheap long distance calling or prefix based international calling service. The whole phenomenon of wholesale VoIP business is dependent on the class 4 Softswitch solution.

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