Covergence Banks on SIP Risks

"Massachusetts-based startup Covergence Inc. believes it has cooked up a cure for some of the risks associated with implementing new SIP-based applications (see SIP Guide).
With new session initiation protocol (SIP) applications like VOIP, instant messaging, and audio/video conferencing taking root at service providers, the operators need a way to secure and provide quality of service (QOS) for those applications, according to the startup, which was founded in 2003 and has raised $16 million in venture funding."

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