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It is the job of a session border controller to exert influence over the data flows of sessions. The term "border" refers to a point of demarcation between one part of a network and another. As a simple example, at the edge of a corporate network, a firewall demarcates the local network (inside the corporation) from the rest of the Internet ...
An H.323 Gatekeeper serves the purpose of Call Admission Control and translation services from E.164 IDs (commonly a phone number) to IP addresses in an H.323 telephony network. Gatekeepers can be combined with a gateway function to proxy H.323 calls and are sometimes referred to as session border controllers (SBC).
PF, built-in OpenBSD firewall PF can handle the NAT through the "static-port" directive and the bandwidth control through the built-in queuing system of SIP connections pfSense , a firewall / router distribution based on FreeBSD and PF ; has QoS that properly tags VoIP traffic and a SIP proxy package that is available for NATed endpoints.
Sonus SBC 1000 Session Border Controllers (SBCs) are being incorporated into Microsoft Technology Centers (MTCs) globally to give enterprises hands-on experience with Sonus solutions in Microsoft ...
Sonus Enhances Session Border Controller Portfolio, ... The Sonus SBC 1000 and SBC 2000 Session Border Controllers are purpose-built for the unique requirements of Microsoft Lync deployments ...
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NAT traversal with SBC during user registration. Similar to the registration case, the SBC will also include itself in the path of INVITE and other request messages. When receiving an INVITE from a user agent behind a NAT, the SBC will include a via header with its own address, replace the information in the contact header with its own address and also replace the address information in the ...
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