The Importance of Session Management in SIP Communications

to the SBC, which acts as a firewall,” said Konrad. This firewall is important because it can stop the SIP messages and do what you need them to in terms of measuring for security, quality, and origin, then sending the messages out to the other side, or the PBX (News - Alert). This interference of the SBC allows for more precise pinpointing of latency issues over the network, and security problems if there is an intrusion.

In theory, you can go straight through from the SIP provider to the PBX without the SBC, but the SBC negotiates the interoperability of protocols. If a business has legacy systems, such as an IVR, that is not compatible with a SIP environment, instead of ripping out these legacy systems, the SBC can communicate between the SIP provider and the IVR. “The SBC is the traffic cop and connectivity

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