An SBC with discrete signaling and media functions also aligns with the IP Multimedia System IMS reference architecture, a multi-layer, hierarchical, highly-decomposed model comprising multiple, distinct, functional components with standardized interfaces. While Session Border Controllers were originally custom hardware appliances, contemporary vendors have now implemented them as pure software elements running on x86 commercial off the shelf COTS server platforms.
Skip to Content. A Microsoft Company. Send Us a Message. Footer Menu Company. Contact Us. Their granular control over communication sessions offers enormous benefits to organizations in terms of quality of service, security, and reliability. Since many SBCs are capable of analyzing traffic and optimizing where it gets routed, they can significantly increase data transfer speeds and the quality of voice calls. For example, SBCs are able to prioritize and redirect sessions when the network is busy.
Many MS Teams Direct Routing implementations take this a step further by using a media bypass to send data from users directly to the SBC, which shortens the path for media traffic and improves system performance as well. SBCs also apply rate limiting, encryption, and other advanced security measures to help prevent denial of service DoS attacks and fraud.
Along with security, SBCs make communications more reliable and consistent. SBCs can detect and normalize different SIP dialects to ensure that calls connect seamlessly without any interruptions. They also transcode audio and video codecs in real-time to support sessions across multiple devices and networks. Luckily, when organizations migrate to Microsoft Teams Direct Routing, their managed service provider will help with implementing an SBC.
Still have questions about SBCs and cloud telephony? Microsoft Teams usage is on the upswing with million monthly active users and counting. A session border controller detects and normalizes mismatching SIP dialects so that the call can continue seamlessly and without disruption.
Media transcoding — Another job of a session border controller is to transcode codecs. Low and high bandwidth video and voice codecs work differently on computers and tablets, dedicated VoIP phones and mobile smartphones. In real time and in both directions, an SBC will transcode between the two codec types as the call passes through it. Bandwidth restrictions — Calls made outside of 4G or even 3G coverage — or limited WiFi connections can be of poor quality.
An SBC sitting between networks recognizes this situation and transcodes to and from lower bandwidth codecs when necessary. Where the SBC remains onsite , a company may choose to have it installed and managed by IT teams in house. However, this option may overload busy IT staff, require additional hardware, and prevent them from focusing on more strategic endeavours.
Outsourcing to a service provider can be an option. Increasingly however, providers are moving towards the virtual SBC model, where they can handle it from their cloud environment. As many companies are choosing the option of having less hardware to manage on premises, SBCaaS is a good fit for companies using more cloud-based services. It means that IT teams can utilize the benefits of virtualizing servers, storage and other infrastructure.
Those benefits include faster deployment, higher utilization rates, ease of management and scalability, resulting in lower overall operating costs. SBCs are mission-critical for enterprises and service providers. As such, you need to work with a vendor who has the experience and expertise to deliver a resilient, high availability solution with a low to zero failure rate. The modern unified communications UC ecosystem is often comprised of complex, multi-vendor systems, and its efficient operation relies on the compatibility and communication between all the moving parts - including session border controllers.
Get the support you need to effectively monitor, troubleshoot and optimize SBCs, and deliver seamless, reliable and high-quality customer and remote working interactions.
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