Session Border Controllers
Best Session Border Controllers include:
Cisco Unified Border Element (CUBE), AudioCodes Mediant Enterprise Session Border Controllers (E-SBCs), Ribbon Session Border Controller (SBC), RedShift Networks Session Border Controller, AudioCodes Mediant Virtual Edition (VE), Dialogic Session Border Controller, and Cisco Session Border Controller.
The Cisco Unified Border Element (CUBE) is a session border controller, which provides session control, security, interworking, and demarcation. CUBE is a software product available for licensing on the Cisco IOS® and Cisco IOS XE Software which runs on Cisco enterprise routers, but…
REVE Session Border Controller is an enterprise solution that provides carrier grade scalability, security with high performance. REVE SBC provides robust network security under heavy loads & DoS attacks with distributed architecture for network availability & resiliency…
Sangoma provides VoIP security via their line of session border controllers, providing editions for SMBs, Enterprises, and the high volume Netborder appliance supporting up to simultaneous 4000 calls. And the Sangoma Virtual Machine SBC is available as a software only solution, securing…
AudioCodes Mediant Virtual Edition (VE) is a scalable solution supporting SIP interoperability, media handling (including transcoding) and security. It provides full SBC functionality for enterprises and service providers looking to deliver voice services such as hosted business…
What is a Session Border Controller?
A Session Border Controller (SBC) is a device used to regulate and protect IP communications flows. They are typically deployed at both the network edge and at carrier interconnects, or the border between their users and other service providers.
An SBC’s main function is to manipulate IP communications signaling and media streams. It secures the main SIP network and application servers, and providers client/server interworking as it acts as a back-to-back user agent.
Security- protection against Denial of Service (DoS) and Distributed DoS (DDoS) attacks, media and signaling encryption, protection against service theft and toll fraud.
Session routing- routes sessions across network interfaces. This ensures the least cost routing.
Protocol interworking- interconnection between various different protocols and codecs, like SIP to H.323 – or g.711 to g.729.
Multivendor interoperability- regulate multivendor incompatibilities by standardizing messages and signaling stream headers.
Quality of Service (QoS)- implement call admission (or denial) policies, Type of Service (ToS) marking, or rate-limiting for service quality assurance.
Features and Capabilities
- Normalizing Session Initiation Protocol (SIP)
- Media transcoding
- Bandwidth restrictions
- Session routing
- Protocol interworking
- Multivendor interoperability
- Quality of Service (QoS)
- Traffic policing.
- Resource allocation.
- Rate limiting.
- Call admission control.
- ToS/DSCP bit setting.
Performance under real-world network traffic loads- SBCs are expected to perform under real-world network traffic loads however consider your enterprise and the mix of traffic it receives daily. Best way to check is to deploy it in a live environment that mimics your enterprise’s traffic to see how well it handles the network load.
Security- SBCs come with a variety of security protocols but many vendors offer them in variants. Check what is being offered to ensure it suits your business needs.
Other businesses using VoIP Phone Systems- This can be especially helpful to startups and smaller business models needing to decide how relevant this is for the business. Look at the types of business using SBCs and how they are being implemented.
Some SBCs are priced at anywhere from $300 to as much as $55,000. For accurate pricing, the rule of thumb is to contact the vendor to receive a direct quote for services you would like rendered. As mentioned above, there are some features or functions that come standard, like security, but the specificities may vary, eg: the features present for Fraud Detection and Monitoring.