{"id":2093,"date":"2025-06-25T05:18:44","date_gmt":"2025-06-25T05:18:44","guid":{"rendered":"https:\/\/www.revesoft.com\/blog\/?p=2093"},"modified":"2025-09-05T10:36:15","modified_gmt":"2025-09-05T10:36:15","slug":"softswitch-vs-sbc","status":"publish","type":"post","link":"https:\/\/www.revesoft.com\/blog\/sbc\/softswitch-vs-sbc\/","title":{"rendered":"Softswitch vs SBC : Understanding The Difference"},"content":{"rendered":"

In the world of IP-based communication, several critical components ensure reliable and secure voice and video traffic. Among these are softswitches and SBCs, or Session Border Controllers, as they play a vital role in VoIP communication; however, <\/span>many service providers get confused while selecting between a Session Border Controller and a Softswitch. Often, they have requirements for a Softswitch, but they look for SBCs instead. The main reason for this confusion is that both products \u2013 Softswitch & Session Border Controllers have some common elements, although they are very different from each other in terms of working.\u00a0<\/span><\/p>\n

In this detailed blog, we will discuss Softswitch vs SBC and how you can decide which is the right one for you. We <\/span>will help you understand their differences and choose the right solution for your specific business needs. But <\/span>before that, let\u2019s understand what these two software systems are.<\/span><\/p>\n

What is a Softswitch?<\/h2>\n

A Softswitch is a central software in a VoIP network, which connects the calling party with the called party. In a VoIP network, <\/span>Softswitch <\/span><\/a>provides call control intelligence so that call routing, signaling, and terminating sessions are executed. A software-based solution, Softswitch is also known as Class 5 Softswitch in the industry.\u00a0<\/span><\/p>\n

\"softswitch<\/p>\n

Short for \u201cSoftware Switch\u201d, <\/span>these are designed to route and manage calls across networks. So when a caller dials a number, the softswitch receives the signaling information, identifies the best route for the call by considering various factors, including cost, destination, and network availability. It then connects the two parties.<\/span><\/p>\n

What is a Session Border Controller?<\/h2>\n

A Session Border Controller, which is also known as a Class 4 Switch, is software that secures communication networks, providing interworking between incompatible signaling messages and media flows. The main role of a <\/span>Session Border Controller<\/span><\/a> is to provide secure, scalable IP-to-IP connections, message interworking, and transcoding.<\/span><\/p>\n

\"SBC<\/p>\n

The main areas where an SBC works<\/a> include inspecting and protecting the flow of incoming and outgoing calls, making sure nothing harmful gets through. SBCs secure and manage SIP-based VoIP calls at the edge of the networks, signifying the term ‘border’ in its name.\u00a0<\/span><\/p>\n

Often, Session Border Controllers are confused with Firewalls, which are another important element of VoIP networks, but they serve very different purposes. A Firewall protects<\/a> an IT network by filtering traffic based on IP addresses, ports, and protocols. It protects against unauthorized access and general network threats like intrusion attempts.<\/p>\n

\"firewall<\/p>\n

However, firewalls are not designed to handle the complexities of SIP signaling and media streams in VoIP communication. In other words, we can say that firewalls lack the intelligence to understand or manage SIP traffic<\/a>, and this is where an SBC steps in. An SBC works by understanding, monitoring, and controlling VoIP sessions<\/a> in real time, and not just permits or denies traffic like a firewall.<\/p>\n

Softswitch vs SBC: Key Differences<\/h2>\n

\"softswitch<\/p>\n