The chances are you don’t think about your Session Border Controller (SBC) much, until it breaks. Then suddenly, the wrong calls are getting blocked, the right ones aren’t getting through, and your compliance officer is asking why recordings aren’t showing up.
In 2025, the top session border controller vendors are delivering solutions that accomplish more than ever. These systems make sure your Microsoft Teams calls stay encrypted. They translate protocols between whatever UC platforms you’ve got stitched together, and they catch suspicious traffic before it can cause damage.
Still, finding the right SBC vendor can be challenging. You don’t want to think about SIP normalization or signaling security. They just want voice that works, wherever their people are, and an audit trail you can trust. We’re here to help, with our objective insights into some of the best session border controller vendors worth watching this year.
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The Top Session Border Controller Vendors
The Top Session Border Controller Vendors: SBC Showdown
Picture this: you’ve just rolled out a new UCaaS across half your company, but your SIP trunks still go through a legacy PBX.
Or maybe your hybrid workforce spans five countries, and you need voice experiences to be consistent everywhere. That’s where the top session border controller vendors matter most. They stop calls from falling apart and make sure your hybrid and multi-platform setups don’t break the bank or your SLA.
Now, let’s jump in. These best SBC providers are on our shortlist for a reason: flexible deployment, sharp integrations, smart security, and support that enterprises actually need.
AudioCodes
AudioCodes has been in the SBC space for ages, but they’ve managed to stay sharp. Their flagship Mediant line now comes in hardware, VM, and container versions, all running the same software core. That means whether you’re deploying in AWS, on-prem, or at the edge, you’re not managing wildly confusing stacks.
AudioCodes’ session border controllers are fully certified for Microsoft Teams and Direct routing, packed with advanced security features, and refreshingly easy to use. They also make SBC Wizards and SCOM tools for Teams Direct Routing for simple provisioning.
No matter the size or scale of your business, AudioCodes ensures every organization can find something that works for their communication needs.
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Ribbon
Ribbon Communications is one of the top session border controller vendors supporting both enterprise users and service providers. Their SBC portfolio, which includes Core SBCs, Edge SBCs, and Cloud SBCs, covers everything from big SIP trunks to Teams Direct Routing.
Ribbon’s SBCs promise robust SIP security and interoperability for any deployment environment or location. They’re tested to work alongside Zoom, RingCentral, Microsoft Teams, and Cisco BYOC solutions. Additionally, they also include high-level security features for more highly regulated brands. Plus, everything plugs rapidly into DevNet-style APIs, so managing large fleets isn’t a chore.
Ribbon also offers plenty of resources for clients, whether you’re looking for tips on overcoming Direct Routing challenges.
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TelcoBridges
TelcoBridges is one of the under-the-radar players that pops up regularly in SBC comparisons, and for good reason. Their ProSBC (and the free version, FreeSBC) runs on Linux, scales from hundreds to tens of thousands of sessions, and supports SIP/TLS and SRTP out of the box.
They released a big update in early 2025, adding GR‑303 support to their gateway line, which tells you they’re still focused on real-world interoperability. Plus, ProSBC is priced pay-as-you-go, which makes it easy to pilot. But it’s not just about price: it handles remote workers smartly, adapts to whatever SIP trunks and conferences you’re running, and it’s got reliability stamped all over it.
If you’re looking for extra assistance, TelcoBridges also offers a fully managed ProSBC+ service with round-the-clock technical support.
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Thinktel
Thinktel is laser-focused on making Microsoft Teams voice work seamlessly, without the drama. Their Think365 Cloud Voice service bundles SIP trunking, direct routing, and an SBC into a neat, managed offer that’s built for speed. Setup’s quick, and you’re talking to real people when something needs tweaking.
Behind the scenes, Thinktel’s been certified for Teams Direct Routing for years, and their SBC setup is fully redundant, running out of geo-redundant Canadian data centers. You get full PSTN breakout, number portability, voicemail, and all the Teams voice features without needing to figure out Microsoft’s call policy maze yourself.
What makes them stand out is how straightforward the process is. No confusing pricing, no mystery integrations. They’re particularly popular with Canadian businesses, but their model works for any IT team that wants Teams voice rolled out without having to become a SIP expert overnight.
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Oracle
One of the better-known names in any list of the top session border controller vendors, Oracle supports companies worldwide. The company’s SBC offering is built to enable connections between fixed-line, mobile, and IP interconnect solutions. Oracle offers STIR/SHAKEN client support, SIP trunking and hosted business services for enterprises, and even assistance with regulatory compliance requirements.
What’s notable is how deeply Oracle’s SBC ties into broader enterprise architecture. If you’re already using Oracle Cloud or running on Oracle’s telco stack, it slots in smoothly. It’s virtualized, container-ready, and works with Kubernetes for high availability setups. You can also run it on bare metal.
Oracle offers plenty of end-to-end support and guidance too, as well as specialist solutions for Microsoft Teams Direct Routing and Operator Connect.
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Alianza
When Alianza acquired Metaswitch, a lot of people wondered what would happen to the Perimeta SBC. Turns out, it’s only gotten better. Perimeta is now fully software-based and tuned for service provider environments that want to go full cloud, but without losing the tight control you get from on-prem deployments.
One of the standout features is how Perimeta separates its signaling and media planes. That means you can route signaling through your cloud region of choice while handling media closer to the edge, reducing latency without blowing up your architecture.
It’s also tightly integrated into Alianza’s broader voice platform, which means you get a native path to cloud voice, contact center, or carrier-grade UCaaS without bolting together different tools. Teams Direct Routing support is built in, and real-time policy enforcement lets you control traffic flows with precision.
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Cisco
Cisco doesn’t make much noise about CUBE, but it’s one of the most widely deployed SBC solutions out there. If you’ve already got IOS-XE gear in place, CUBE is practically built in, and it handles a surprising amount of session control without requiring an extra box or virtual machine.
Over the years, Cisco has added new features to its SBC system, like DNS-SRV prioritization, dual-stack IPv4/IPv6 support, and webhook-based telemetry. So now you can trigger automation scripts or update call analytics in real time.
CUBE also works well with Teams Direct Routing and Zoom Phone local survivability. It’s streamlined, intuitive, dependable, and integrates deeply with Cisco’s collaboration tools and voice infrastructure.
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Avaya
Another of the top session border controller vendors with a long history in voice, Avaya combines flexibility, security, and reliability. The company’s Session Border Controller for Enterprise (SBCE) comes with built-in security features, high availability clustering, and NAT handling for mobile users.
Avaya SBCE also works well in hybrid setups, so if you’re transitioning from on-prem to cloud or trying to integrate with Microsoft Teams, it gives you some breathing room. The documentation is great, and there’s a solid admin community out there for support when you need it.
For companies in need of additional support, Avaya can also offer specialist services and guidance for connectivity and technology management.
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Nokia
Nokia’s Core & Edge SBCs are built for telcos, but enterprises with performance needs will appreciate what comes with that pedigree. These SBCs sit at access edges handling signaling and media traffic for IMS, roaming, SIP trunks, and enterprise interconnects.
Recent updates strengthen TLS/SRTP encryption and add support for multi-tenancy in NFV clouds, handy for enterprise divisions or managed service providers spinning up separate environments. Their media anchor controls also reduce latency and packet loss, which is a big deal when your traffic is global.
Nokia’s SBC solution can be deployed either as a standalone solution or as part of the Nokia VoLTE/VoWiFi offering. Alongside secure and scalable technology, Nokia also offers access to network analytics through their SBC portfolio for SLA verification and QoE assurance.
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Cataleya
Cataleya’s Orchid Link was built from the ground up for cloud-native deployments. This is an SBC that runs inside Kubernetes pods, auto-scales with load, and updates itself without interrupting calls Orchid Link supports Teams Direct Routing, Webex, and even acts as a WebRTC gateway. Their REST APIs make integration into CI/CD pipelines a breeze.
What really stands out is the embedded analytics, Orchid spots weird SIP behavior or burst traffic, and pushes alerts into Ops tools like Slack. That kind of anomaly detection gives you early warning of issues that could otherwise disrupt service .
The tools come with all of the standard security features today’s companies expect, as well as fraud analytics. Cataleya even offers a direct “Link2Teams” carrier peering and routing service for Teams users.
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Ericsson
Ericsson's Cloud IMS SBC is usually sold to carriers, but it deserves attention if your enterprise roadmap includes private 5G, VoLTE or VoWiFi. It handles signaling/media handoffs between LTE, Wi‑Fi, IMS and web RTC, all with carrier-grade muscle.
In 2025, they've rolled out tighter slice-aware signaling, SRTP optimization, and SIP-UA interworking, making it easier to deploy cross-network voice in the mobile core . It integrates with their broader Communication Services UDM suite, giving you telemetry on session quality and per-subscriber QoS.
If you're building a private 5G network or deeper engagement with IMS, Ericsson’s SBC brings heavy-duty controls and future-proofing, complete with deep analytics and seamless scaling across multi-network domains.
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Enghouse Networks
Enghouse’s Dialogic BorderNet SBC has built a reputation for reliability, especially in UCaaS and contact-center integrations. It handles Teams Direct Routing, SIPREC for recording, STIR/Shaken, WebRTC, TLS/SRTP, and transcoding all from a single code base.
As one of the top session border controller vendors, Enghouse embeds both real-time analytics and advanced security into SBCs. You can track all kinds of operational data, leverage built-in firewalls and DoS protection, and dynamically distribute processor loads based on insights.
SBCs are available as hardware, VM, or in AWS marketplace for SME edge use cases. Its balanced feature set and adaptability make it a solid choice for businesses wanting to simplify SBC deployment across hybrid environments.
