At the core of any carrier class Voice over IP service, a Session Border Controller will be found. This powerful device allows for the separation of core components such as SIP Proxies, Soft Switches and Class 5 VoIP switches from their high density subscribers.

The unique problems associated with Network Address Translation (NAT) and Firewalls with respect to VoIP traffic can present a multitude of issues. In its worst form a subscriber may be completely blocked from service, in other cases unreliable connections and audio problems will plague support personnel. The Session Border Controller provides this function without having to add a multitude of servers to your core components.

When thousands of subscribers equipment must re-register to your core VoIP components at the same time, this can severely cripple servers and proxies that are under powered. With the threat of hackers, viruses and Denial of Service (DoS) the Session Border Controller can protect a network.

With the transition from carrier based H.323 networks to the growing and popular SIP protocol, the Session Border Controller allows transparent conversion from legacy H.323 networks and interoperability with SIP based networks.

These are just a few of the important functions a Session Border Controller performs. Please see our Ncite product line of Session Border Controllers for more information and specifications.