Reliable communication systems are the backbone of businesses and communities. At the heart of seamless voice communication are two powerful solutions developed in VoIP:
Class 4 Softswitch solution
Class 5 Softswitch solution
Though both of these VoIP solutions handle different tasks, they work together to provide a smooth, efficient, and secure communication experience. If you’ve ever made an international call or customized your voicemail, you’ve unknowingly relied on these technologies. But what exactly do they do, and how can they improve your VoIP network?
Breaking It Down: Class 4 vs. Class 5 Softswitch Solutions
Class 4 Softswitch: Handles the "middle mile" of communication by managing long-distance call routing between carriers.
Class 5 Softswitch: Manages the "last mile" of communication, focusing on local calls and delivering personalized features to end-users.
To put it simply: Class 4 gets your call across cities or countries, while Class 5 gets it directly to the person you’re calling, along with any extra features like call forwarding or voicemail.
What is Class 4 Softswitch Solution?
It is built for handling long-distance calls between different networks. It’s like the middleman that ensures voice traffic moves from one network to another without getting stuck. In simpler terms, the class 4 Softswitch solution keeps long distance calls clear and reliable, no matter how many networks they pass through.
What is Class 5 Softswitch Solution?
While the class 4 Softswitch solution focuses on routing calls across networks, class 5 Softswitch solution handles local services for end users. It is responsible for all the features people expect to have seamless communication such as IVR, call transfers, call forwarding, call mute and unmute, voicemail, conference calling, and many more. Essentially, the class 5 Softswitch solution makes VoIP services feel more personal and feature rich. As a result, it improves the experience for both residential and business users.
How Do Class 4 and Class 5 Softswitch Solutions Impact Your Network Architecture?

Together, the class 4 Softswitch solution and class 5 Softswitch solution build the foundation for an efficient VoIP network. Here is how they impact your network architecture:
1. Streamlined Call Routing and Flow
The class 4 Softswitch solution takes care of the long distance part of the call. Generally, this solution routes calls through the best available paths. Ultimately, when the call reaches its final location, the class 5 Softswitch solution takes over to deliver it to the right user. This handoff creates a seamless call experience and minimizes dropped calls or delays.
2. Easier Service Expansion
Need to add new service areas or increase user capacity?
The class 4 Softswitch solution makes it simple to scale your service globally by handling high volume call traffic. Meanwhile, the class 5 Softswitch solution makes it easy to add more users and offer advanced features without major system changes.
3. Lower Operating Costs
Softswitch solutions eliminate the need for bulky, traditional telecom hardware.
The class 4 Softswitch solution reduces costs by optimizing bandwidth and ensuring calls use the shortest possible routes. The class 5 Softswitch solution keeps things cost effective by supporting virtualized user services that don’t require expensive physical infrastructure.
4. Better Security and Reliability
The class 4 Softswitch solution includes built-in fraud detection that stops unauthorized calls in their tracks. The class 5 Softswitch solution strengthens user-level security with encrypted communications and secure account authentication. Together, they form a solid defense against call fraud and network breaches.
5. Improved User Experience
The right balance of class 4 and class 5 solutions means your customers enjoy crystal-clear calls, easy call transfers, and feature-rich voicemail options. The class 4 Softswitch solution ensures their long-distance calls stay connected, while the class 5 Softswitch solution handles everything from missed call notifications to local number portability.
Concluding Notes
Both the class 4 Softswitch solution and class 5 Softswitch solution are inevitable blocks in building a robust and efficient VoIP network. The class 4 Softswitch solution manages long distance call routing between carriers. While the class 5 Softswitch solution ensures local calls are delivered with feature-rich services that users rely on daily.
When these solutions work in tandem, they boost your scalability, security, and overall reliability of a network. You will see fewer dropped calls, faster routing, and happier customers.
If you are prepared to strengthen your network with the right communication solutions, then let ASTPP’s experienced team help you design and implement the perfect Softswitch solutions for your communication needs.
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