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What is a Session Border Controller (SBC)
What is a Session Border Controller (SBC)
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Cloud Infotech
3 posts
Mar 12, 2025
4:24 AM
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A Session Border Controller (SBC) is a specialized network device used in Voice over IP (VoIP) communications to manage and secure voice and multimedia sessions. It sits at the border between different networks, such as between an enterprise and a service provider, controlling signaling and media traffic.
Key Functions of an Session Border Controller:
Security – Protects VoIP networks from fraud, denial-of-service (DoS) attacks, and eavesdropping.
Interoperability – Bridges different VoIP protocols and codecs for seamless communication.
Quality of Service (QoS) – Ensures high-quality voice and video transmission.
Session Management – Controls call routing, bandwidth allocation, and media flow.
Regulatory Compliance – Helps comply with legal and industry standards for telecom networks.
SBCs are widely used by telecom operators, enterprises, and cloud communication providers to enhance security, reliability, and efficiency in VoIP communications.
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